Here you can see how I proceed to color a pencil sketch (from my sketchbook).
This sketch wasn't scaned but came from a cheap photography with my phone. But it's not very important, because I willsketch it again with the procreate tools.
Then I "ink" it (even if it's still very messy, it will stay more clear than a simple sketch) and at yhe end I add the colors.
At the moment, I don't shade the digimix rewards, but maybe I will change that in the future =)