I would love to, but I can't. I'm usually booking new projects a month or two in advance. I try really hard not to overbook my schedule so I keep the quality high and my responses timely.
Absolutely not... Well, part of me does. I have more ideas than I have time to draw them and coming up with ideas on my own is half the fun.
I used to but I don't have time anymore unless it's part of a larger design project.