Hi Amandine.vgnd...
I hope you do well...
your works are amazing..
Start with a post with "introduceyourself" hashtag. and start with some ordinary posts first. from your 5th or 6th post start with your more professional artworks when you have more followers.
I myself am not that powerful here but I try to support you..ask whatever you want on instagram. I resteemed your post.
goodluck @amandine.vgnd