@Nekomata That was awesome! Thanks for posting it! I really learned a lot. I never did any art in school so I never really learned the theories behind stuff. I usually learn by seeing what other people do and trying it out, without really understanding the reasons behind it. xD Just reading this has helped me to look a lot more closely at art, and notice the colours used for shadows and why they were chosen and how come they work together well. Your examples were so helpful!

yellow cannot get any darker without getting ugly/green.
SO TRUE xD I hate trying to shade yellow things haha!

I'm really excited to try out some of the things I've learned now. I really like the idea of the tonal pieces as well, as I'm sure my placing of light sources etc. could also use a lot of work!

Awesome guide, thank you! :D