Thanks, I'm happy to hear that.
Practice and experimentation I suppose.
Observe and learn how everything is drawn in the original source material and then see what works with the available tools you have.
If there is official concept art and guidelines on how everything is drawn then that helps a lot too as you know what rules and methods the original artists/animators followed when drawing these characters in their work.
I'm still learning how to get everything down though (backgrounds in particular are still a big weakpoint of mine) but hopefully I'll get there eventually.