The first thing here, is to choose the right colour scheme. This will depend on a lot of things, like for instance the mood or the story that you wish to tell... I wanted to do something really colourful and warm, so for the character I choose some very saturated orange, mixed with yellow and pink, the background will be colder, a green will do the job nicely with the whole piece and the light will be a pale blue. At this stage it’s only a quick sketch, just to test the colours and the first composition.
TIP: Lay down you colours on another layer, so you’ll keep them along the way.