"Jack" Commission day 1 + What to do about mistakes?

 I drew out my final compositional outline for my new commission.  It may look a little odd, but that's because she has one eye in real life.  I'm working out the color scheme in my head before I begin the ebauche tomorrow.
  This commission is going well, but I had a rough day yesterday.  I stretched and sized three canvases yesterday with RSG.  But, with all the variables that are involved, it's no surprise that the canvases didn't stretch tightly enough.  
  I was angry with myself and nearly ripped apart the canvases before I put a ground on them.  I let it go and didn't think about it for the rest of the night.  I have a pretty short fuse and I know that I have to let myself cool down.
  I woke up today feeling better and put a warm gray ground on the canvases.  I can't use them for gallery or commission paintings, but I can use them for studies.  It's inevitable that mistakes happen, but it's not worth getting upset about.  I know now that I either didn't put enough glue in the RSG mixture or I didn't stretch the canvases tightly enough before applying the glue (or maybe both).  You have to turn mistakes into learning experiences.

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