Fanfic

Hi there,

I'm a beginner, but I want to write a big novel. I'm currently writing it, but people advise me to start with writing simplier thing.
So I was thinking of writing a fanfic I've in mind about She-ra. (cause i've seen some of them go by). I already wrote 1~2 chapters, and I was wondering. Would you read it ? (cause i'm beginner, and it could be really bad, but in other hand it would be great to get some feedback)
If Yes, how could I manage,

write all and send it,

or wrote chapter by chapter and send by chapter,

or wrote all and send chapter by chapter so I could Polish ?

(My english is really bad, I'm writing in french, I'll translate more properly if I send my work)