I did in fact get the flap, the heel and the gusset done last night, and started on the foot as well. Not really very happy with the heel - I think that, as written, the centre group of stitches is too narrow. I might play around with resizing the heel and see what happens.
It's a good feeling to be getting to where I can diagnose the cause of the problem as well as figuring out that there is one.
Top secret embroidery project on the forecast. Knitting may slow down, as embroidery has a deadline.