I was using GraphicsGale, and I couldn't find an option to make the background transparent. I changed the layer options to make white a transparent colour, but it didn't save transparent. I then opened it in photoshop and tried to make the background transparent but obviously it didn't quite work. Any advice on making it transparent properly?
When making the background transparent you left quite a few strays that have semi trans. Switch themes under your profile to something dark to see if you need :)
Why does the window bend around the corner..? Instead, break the window up into two windows.
They seem to be gone now. In Photoshop just work your pixels on one layer and leave one BG layer empty. Using 'save for web' instead of just save is an insurance of file output. Always use gif or png8 for pixelart never the png24, k.