COY stands for Cross Over Yuri. The premise is pretty simple, I have a list I've compiled of over 500 cute girls from various anime and manga. I then use a random number generator to make pairing, which I then draw. Every third picture is a threesome.
I love this pic. It's pretty simple, but I had a lot of fun with the colors. I started using my current coloring technique right after this pic, but I did experiment with it some here.
Also, can I just say I think these two make an adorable little brown couple?