When I find when I am frustrated I walk away maybe for 5 min., maybe 5 days. I find if I push through it I get sloppy and accept lesser work than I truly think I am capable of. Your work is truly amazing Watson!
I took a binding basics class just to get help with my corners not coming together as well as I wanted or liked when I was ready to hand stitch, still not where I hoped it would be. I've watched over and over the YouTube tutorial videos where the corners meet on the initial attempt. I find this mind boggling.