It took me some time but here is my attempt. It really does feel like magic to see a character come together after giving form to a flat drawing, especially when you have to trust both yourself and the process in the beginning stages (when things don't look so great). I will definitely return to keep using these techniques again and again, and the amount of potential seems huge.

An original character design for a friend. Tried to colour with these methods and it was really an eye opener. Would love any feedback. Using Krita, and still trying to find a brush with a soft edge and a hard edge. Also, not sure how to rotate the brush to control the direction of the hard and soft edges. I may be missing something in my setup. I am using a Surface Pro 8, with latest version of Krita. Thanks!

Here is my attempt to draw something similar using techniques from video.

Now I'm wondering if it might be worth it to take a break from this to try Dorian Iten's Shading Course you mentioned and come back after it. My shading is currently only okay at best.

I get so lost and overwhelmed with colouring, more like starting how to colour. This lesson is exactly what I need and I'm excited to go deeper with more advanced stuff, especially when it comes to rendering materials and polishing up. So thank you :D