Jack Skellington sketches

Felt like drawing more of Jack. These where mostly done as  a form of practice for me in drawing facial expressions Just wanted to point out that i know there is most likely endless mistakes in the shading,i didnt really focus on any light sources or anything and just threw it in there quickly as they are just sketches.
Double click for full view ^^

EDIT
Added old paper texture to the background becuase i always loved that old fashion look in sketch drawings