I did this for Blizzard art contest in 2D Wacraft character category. I try to focus much on the character as the background I leave it simplified. I sketch the outline using pencil then scan into computer and coloured it using Photoshop CS. I didn't spend much time on the details in colouring, because my PC(laptop) is very weak and keeps on lagging. =( So, i tried to do the details mostly in sketching.
Anyways, crits and feedbacks are welcome.