You did a good job on this piece, but I suggest you credit Johannes Helgeson for this. Maybe try and change a few things, like the face the pose is fine. You can take inspiration from other artist and copying is okay for practice, but please credit the artist if you do.
Sorry, you are right. i saw this a similiar draw on pinterest and i thought i could simply make a copy...
i dont even search who the artist was... my fault.
Thank you for the advice.