sketching SALLY (Nightmare before christmas)

As you can see with those jpegs down below, I have got a very long way to go. I only started sketching more sophisticated characters recently, and of course out of my own volition.

I use my Veikk A50 tablet and Medibang paint pro for this one. I haven't seen the animation before, I only came across a photo of the character on Pinterest and I felt, why not do a sketch of her. I have been having problems with painting though. Using colors to make the sketch more realistic. I also have a challenge with layers. Turns out they are a very important tool in doing digital sketching.