Only when it's clear that I've been trying too hard. In comics school we had a strip comic assignment and we had to make like 20 strips or so with a clear storyline and everything. It turned out absolut SHIT and I hated it. And when I say SHIT I mean SHIT. A year later when the class in the year under us had the same assignment and one of them had real trouble with the assignment, I took her to my studio, closed the door and showed her my stuff from the previous year. She left feeling better, at least.
I told my teacher that I would never ever make strip comics ever again, but then one night I was bored with all the stuff I had to do and out on my paper came a blue monster with big fangs who didn't try to be funny at all, he was just a little bit awkward. And so Kalle Hizz was born