Hi and welcome.
The forum to post your writing in is here:
Editing & Writing Topics - UsingEnglish.com ESL Forum
Good luck with your writing. (The other thing to do in the meantime is to read as much in English as you can, particularly in the topics you are want to write about yourself. If you enjoy writing about sports, read the sports section of online English papers. If you like science, read online science journals, etc.)