Seeing as how you were never really that great at the whole "evil" thing (or anything for that matter), you decide to rush toward the scream and help out.
As you began to think about your predicament, you start to realize something. Not just about how you even got into this problem in the first place, but how you've gotten into at least dozens of situations like this; It was all because you were trying to be a good little evil minion. Almost everything you've ever done in your life was related to missions and training for missions for the Hive and what did that get you? Nothing but mocking, bruises, and (if you were lucky) half-flanked backhanded compliments (and that was just if you didn't fail a mission).
"Well... That's all about to change." You say to yourself.
Taking a heroic pose (or trying to do so without face-planting at least) as this song starts to play in the background (you don't know from where, but it sounds nice), you vow,
"I swear to Queen- Wait, no, not her, at least not any more..."
You pause for a few seconds to rack your brain before you continue,
" I swear to Princess... Luna, yeah that's it, I swear to Princess Luna that from this day onward, I will do everything In my power to help others no matter the cost!" You say to yourself with fire in your eyes. After finishing your awesome vow, you head to where you think you heard the scream from before...
And immediately get lost. You've been galloping in the same direction for (what you believe to be) twenty minutes now so you say to yourself,
"Gah! Lost again?! Whoever was screaming has to be saved or dead by now. Oh well, back to square one-"
You're interrupted when you hear the scream again! This time it's alot closer now, so you begin to run towards the scream, but you trip over something and face-plant into a tree root. As you get up while rubbing your face in pain, you see what you tripped over... a sewing kit?
Sewing always was one of the few things I'm good at. This might come in hoofy later.
You think before picking up the sewing kit and then continue to go towards the scream. You get lost a few more times (you have a terrible sense of direction) before you finally get to where the scream was at. You walk out of the trees and come across a open field with a no monsters at all. In fact, the only living being in sight is a pony in the middle of the field.
The pony is a white unicorn with purple hair and three diamonds for a cutie mark. She (at least you assume it's a she based on her scream) appears to be crying over a... torn dress. She doesn't appeared to have noticed you yet...
What should you do?
Right... this is an interesting idea for a story, but clearly for it to work you need more attention and readers. I advise you add it to as many relevant groups as possible.
Secondly, if you're chapters are all going to be this short you'll need to update very frequently if you're to be taken seriously.
Lastly, the writing is very awkward at times, have you got an editor/proofreader(s) for this story yet?
Also I think the changeling should never have investigated the scream to begin with, since it seemed to conflict with their initial desire for self preservation, but since we're here, I think they should transform into Twilight and see what's wrong with Rarity, not realising that the two know each other.
Transform to some cool stallion. Like a hero in shining armor and fix her dress.
Suddenly remembering that the unicorn was one of the six mares who was kicking everyone's flank (you somehow had the bad luck of being the only changeling to get beat down by all six of them while the other changelings went down in one hit from one pony each), you decide to tread carefully and smoothly in the form of a handsome stallion carrying the sewing kit... and by that I mean you did what you THOUGHT ponies considered "smooth" and "handsome" but end up looking "adorkable" (endearingly awkward and clumsy) instead and somehow manage to injure yourself with the contents of the kit.
Duh the Changling should transform into Crono
Kinda late for the party, but i'd transform into Twilight. Her friends are probably the most love-giving ponies in existence, (With the possible exception of Princess Cadence, I mean, goddess of love right?) and I would like to say I know her character pretty well, at least well enough to write a story that people like about her. I'd probably become very powerful before I was discovered, then I would hide and watch Celestia. When I figured out everything I would need to know to impersonate her, I'd transform into her and be the one pony loved by all! With that much love, NOPONY CAN STOP ME NOW!!! MUHAHAHA-oops, got a little carried away...
Were I to become a changeling, I would turn into Obama and ransack my house, terrorize my little white children. Be caught by the police, pass all the DNA test. Become the presidents double, actually replace the president. Go four a third fourth and fifth term before taking over the world and using its resources to return to my home land and marry queen Chrysalis before killing her after we have our first batch of eggs and force the mane six as well as Luna to love me and turn celestia into my little slave. I am serious
In rebuttal to your Question, what if we are changelings already disguised and we have simply forgotten who we WERE?!?!
PLOT TWIST!!!
*Not NOW*
However, I am a changeling Happily disguised as an AVERAGE (Yes, AVERAGE) Teenage Human!
And my EVIL Ploy is to take advantage of the Governments FREE Facilities!!! And use ALL their FREE Resources!!!
Freedom and Education Ho!!!
Had this in my read later for a long time and just now started reading it.
Depends, if it actually is real life, then I will continue with my current human disguise and live my life.
If in Equestria then... Pinkamena. I will only let myself be seen by ponies when Pinkie Pie is not around to feed on their love for Pinkie and acting a bit crazy like Pinkie did in Party of One. Nightmare Night however, I will chase Pinkie Pie around covered in toilet paper while holding a retractable knife that squirts cherry flavored gooey deliciousness. Licking the cherry while chasing Pinkie yelling "Fun Fun Fun~" in a creepy way. Hopefully Twilight doesn't one shot me to the mirror pool. If there is those days when Pinkie Pie needs some alone time, then I will sneak up behind her and surprise her with with a gentle hoof on her shoulders. Whatever her reaction will be, I will respond with "fun fun~?" in an innocent and worrying matter. If she leaves to see other ponies then I will hide. If she decides to spill her feelings, then I will be there to listen until she is satisfied, or if I sense someone is coming. I need the party pony to be happy so she can make others happy to feed me after all.
Wow, the more I think about this the more I feel like this could be a good changeling short story. Also a good Pinkie clone story if changeling isn't involve.
IRL? Myself. And also do weird stuff on occasion to experiment. In Equestria? I'd just be a buggo. If it was pre-Thorax, I'd even just waltz into Ponyville like nothing was amiss. I might be crazy.