Here is some great inspiration for people who like drawing snakes. This is my buddy Mez the snake. I hope I have not scared anyone. Notice how the snake's scales look smooth and shiny instead of rough and grainy feeling like many people assume all snakes' scales are. This particular species of snake, Ball Python, actually has smooth scales. I have found that, when doing art, it can sometimes be a good idea to do research to find out these kind of things and to learn about what it is you're drawing or painting in order to make your art more realistic and more accurate.
This is a picture of a dragon's eye that I drew for my dad for Christmas of 2011. The photo isn't very good but the actual drawing looks very realistic. You can't tell from this photo but the eye is from a green dragon. The picture was drawn on a canvas in colored pencils.