I did the "broadcloth" (view D) petticoat and the corset. I also went by the measurements on the back of the pack... I thought I wasn't a size 20 but, hey that's what the packet says for my measurements. It's too big in the bust area, I've tried fixing it with darts but it's not very good - it's just too big.

Sorry not the best picture, I guess. The petticoat is polycotton which was the closest thing i could think of to "broadcloth" and the corset is done in cotton drill. I didn't like the idea of putting elastic lace as the edging either so I also just turned the edges under. I would have preferred an extra yard of ribbon than the 2 yards suggested as it's a bit difficult to wiggle into without the ribbon coming out of the last set of eyelets.. unless I put tiny knots at the ends of the ribbon.
Sewing the boning in while the boning was in the casings with the zipper foot was

I hated it. I've started making a section corset based on the same pattern but as an underbust and I've now learned (by making fabric channels for boning) that a flat/normal presser foot is so much easier than keeping a zipper foot from falling off the edge of the channels/casing.
I will say that this corset is slightly better than my store bought, steel-boned corsets as there seems to be better support on the sides of the bust so the shaping is better in that region.
I think this is an okay pattern to start out with to see if you like making corsets. That's all I bought this pattern for and it's fine as a taster course and if you only want more or less a fancy top. I wish I had thought to check here so I could have made it a size or two smaller. I'm probably going to leave this pattern alone and not make another after the modified underbust version is done. I'd personally prefer to start making fully lined, steel-boned corsets.
I do like the petticoat although it is a bit of a faff getting the fabric to ruffle (I did loose zigzag stitch over some crochet thread then pulled on the crochet thread to gather). I'll probably try making it again but with chiffon and maybe do two layers for extra fluffiness.