Thanks to everyone who responded. I know rounded corners are easy to do from a sort of flat piece coming to a single point by decreasing a stitch on both sides. Does that make sense? Like if I were to do a flap that looks like an envelope flap.
Maybe I'm getting ahead of myself by wanting to make my own pattern?
Sarah (redwitch): Thanks for the advice.
I do really like the bag in the link. I've never tried Fair Isle knitting, so I might try the bag fair isle or just with a single color and learn the shaping techniques used.
Jints: Thanks for the link. Unfortunately, I don't really know how to use charts... yet... :-(
marykz: Yes, why didn't I think of that?
Definitely! If everything else I try fails...