As a fellow beginner artist I'll say: enjoy the process. You won't do great artwork from day 1. Just try making each drawing a little better than the previous one. Take a lot of anatomy tutorials and use references for things you have trouble with imagining, like scene composition and poses you asked for.

Be proud of yourself, you deserve it! And in times of your doubt, you can always look at older pieces you made and see the progress you've already made.