Hi Lizzy, and welcome.
I've had a brief look at your writing on the link you posted. It has an intriguing start, but still needs a lot of work to polish it up and, yes, it does show that English is not your first language. (to be honest, I think this is not a major problem – you could probably pay someone to sort out the language glitches)
Writing is easy. Writing
well takes a great deal of effort. It’s hard work, fascinating, and totally absorbing all at the same time.
I agree with Naomi about posting samples of your work on here and asking for feedback. Also, read the work of other members and give them constructive feedback. You can learn a lot from other writers’ work.
Good luck
Dee