I might not be a pro at drawing but I can give some tips on taking better photos of your pictures
First of all indirect lighting is key. I've notice the picture is pretty dark. Sunlight through a window works pretty well. Whatever you do not use flash. If the light hits a shiny surface on your drawing, it will reflect causing a glaring white spot in the resulting photo.
Second of all, try to keep your camera centered on the photo and the paper itself flat. Also, I'd reconmend to write on regular printing paper if you can't get your hands on those fancy stuff you get at an craft/art shop. Not only does it look better, but its easier to flatten. If you unable to get either of the two, simply tear/cut off the page you are drawing on. Unless if you are drawing a large picture, hiding the rough side where teared will be pretty easy
Lastly, I really like your art style. Just keep on experimenting on different poses, ways to draw, etc. and you'll improve! Please draw some moar
(gah, I made a photography related post on a thread about drawing)