Here's a lo-res scan of a crappy pencil sketch I did a little while ago. I haven't seriously tried to draw anything for years now (the last time I did anything cartoonish was back in high school), but once I had the image in my head I HAD to try to get it on paper. All things considered, I'm pleased with how this turned out ... tho I'm not sure what Walky'll think of Joyce being molested by her T-Shirt. ;)
Things to note: the scan was of a fairly tiny sketch (around 4.5 * 3 inches). I have higher resolution scans which turned out really well, but they're too big to post. Joyce's hair was modeled after Aimee Mann's hair from her Til Tuesday days, down to the thin braid. Aimee's a REALLY light blonde, so if this was to be colored, I imagine Joyce's hair would have to be dyed either really light or really dark ... maybe white with purple streaks? The shirt is a parody of all the skull-faced hair-metal logos from the 80's; honestly, it's rather tame compared to some of the designs from back in the day. Joyce is a LOT taller than she is in the comic -- my bad.
Walky looks a bit androgynous. I dunno if that's good or bad. ;)