You have only just joined Steemit (welcome)- you are doing well so far, and your tags look fine to me. When I started on Steemit I hardly got any votes if at all, it takes a while to build up a following. Join in with lots of challenges and contests and comment on other peoples posts! Great to see you doodling already with this week's challenge!!
I would recommend a few action shots of you working with your username displayed (does not have to be facial shots - could be close-up pictures of the process of making the work), this will help reassure people that it is your own work.
Hope this helps