Concept Sketch Practice

Tried another exercise in concept thumbnail sketches.  These are both rough scene explorations for two characters from Project Apricot, namely the two twin goddess whose powers can manipulate sound.  (I did a really rough sketch of these characters early, here.)

The bottom one is looking up from the inside of a tall tower, with a figure flying up.  This was a tricky perspective to do and I modeled it after this picture of the Inverted tower in Portugal: 

It still needs a lot of work.  The colors on both look flat, but the textures required are really challenging.  Ugh.  It sucks, but I'll keep trying.