The software is called scratch, by the way it is supossed to make games, but i find it really good to make pixel art. If you wanna try it out, here's the link: scratch.mit.edu
This is beautiful! I am familiar with scratch, but I never really thought to use it for pixel art, so that's realy cool! I love how spooky it is and how you got the glowing affects going on as well. Keep up the great work; your art is always fun to look at and this is no exception o/