Here is Part 2 of the Mecha. It's the colouring part, where you'll see how I start by applying the base colour and gradually get in detail and define the drawing until I get the final image. One of the most important things to keep in mind is VALUE!
If you have furthur questions leave them in the comments window. Enjoy!
Sorry it's quite long (7 mins), but for those who want to see the full process will probably enjoy it.