A story stuck in my head

So after reading many fanfiction's I have one stuck in my head.. only problem is.. knowing me and my life.. I would probably post the first chapter then it take a long while for me to post the 2nd chapter or just forget about it all together.. and knowing me and grammar it would be so much of a mess that I don't people could stand it... but I really feel like making this story.. it burns in my head.... not entirely sure on what to do?

If anyone would like to help me in this.. delma... that would be so kind of you to do so and I thank you cencerly