Thulinma has posted this news:
Well, you probably know there already are tools for converting images into patterns. All these tools have 1 problem, though: you need to manually input them in your game. This is where my tool comes in: it can not only convert any picture into a pattern file, it can also input them directly into your ACWW savefile!
Still, that is not all! It can also import/export .acww pattern files, so you can share your creations with your friends.

More info at link above.