Here's the feet tutorial, as promised. It's fairly simple, so if there's anything you want me to add to it, please let me know.
Also, for a bit of reference, I don't tend to draw the realistic foot when I plan on putting a shoe on it. The grey, simplified feet I put over the last pictures are what I tend to do.
Also, I am upsettingly flatfooted, so it's a pain to use my own for reference! WHERE ARE THE DARN ARCHES? DID I EAT THEM OR SOMETHING??