Open Illustrator and place sketch into a new art board.
Trace the shark with the pen tool, use a 2pt black stroke.
4. Make the shark look as real as possible, using:
textures, colors, gradients and whatever else you feel comfortable with.
The shark is under water so your light source must be from above or from the side.
i can do this with in few hours,it is very very simple [login to view URL] really like to draw your shark and add colors on it,please award us now to start his job thnaks