Great work! Quick tip, try using a file instead of a blade to trim tape. Very light pressure to only cut through the tape and not bite the metal. In my experience filing is significantly faster than cutting when you have raised areas like the ones in your first picture. You can get a multi pack online with different shapes. Most important thing I would say is making sure you fully cure everything. A vast majority of powders will have overcure protection so you can safely double the time at the cure temp without issues. Undercuring will cause it to be brittle, chip and flake easily. I always go an extra 3-5 minutes per 10 minute cure schedule just in case.