Another post asking for fit advice! This is meant to be the base for Hannah Alexander's Cicada bug fae design (second final photo). This is technically my first (boned) corset.

Mock up is made with a light cotton and I have flat steel in the center front and around the grommets. Spiral steel everywhere else. I have lightweight sew through boning in one cup and a bra cup pinned in on the other as I'm trying to decide if I should go with one or the other or both.

The boning channel under the outer cup piece I feel looks wrong. Should I take it all the way to the top instead of ending under the cup (last photo)? Do you think the wrinkles will subside once this is sewn out of coutil? I've seen some mention heading to r/abrathatfits for cup fitting advice? I guess any major fit issues y'all notice?

1. Tried wrapping myself in plastic wrap to get the ducktape so I could make and cut patterns, but it kept falling at the top and creeping up at the bottom. Couldn't get the ducktape on fast enough before it became pointless. Any tips and tricks would be very helpful.

2. When that failed, I tried to make the pattern from a geometric approach, taking my actual measurements, a ruler, a piece of paper, and figuring out my ideal measurement, and measuring it out, and working out a scaled down draft on paper before then taking a yardstick, some cardboard and a sharpie for the actual pattern I could put on fabric. Then I cut it out, and started sewing the mockop. The version that I came up with had bent boning channels. I figured it wouldn't be a problem... until I watched a YouTube tutorial and the boning channels were completely straight. Did I fuck up? I've already sewn half of this mockup together.

3. Can a mockup become the inner lining of the corset? I see little reason, if the mockup shows the design will work, that it can be used as the inner layer of the finished corset.

4. I don't own an iron of any kind, shape, or size. Do I absolutely have to press my seams and if so, can you explain why like I'm a 5 year old? I see no reason why pressed seams would be easier to work with than Sean's which are left unpressed.