I'm revealing my drawing process below. If you are interested in it, please click in to view.
I coloured each item on different layers. I have 9 layers in total.
Belt, metal part;
At last, face.
I put all the layers into a folder. Then I duplicate the folder, and flatten the copied folder up, to get a complete Mello.
Adding lightings on the hair and clothes, then adding other small objects and details.
At last, add background and complete.
Hope you like this drawing of Mello.^__^