I want to believe you. It would be very simple to verify, put one of your other posted works next to this one, and include one of the Steemit sketches, and take a couple pictures.
Post them with high enough resolution and low JPEG compression and if it looks legit I'll upvote the post which will be worth enough money to make it worth the trouble! :)
RE: I drew this last night. It was very hard . Looking at the moon