Your work is lovely but are you open to a bit of concrit? Hear me out if so and please don't feel discouraged, that's not my intention.
The shawl and skirt peplum? are far too heavy and detract from the floaty feminine 1950s look I believe the artwork is based on. You'd be better off using either premade lace fabric or buying chiffon/voile (even a light weight cotton would work since it's meant to be opaque.) Then adding your own lace to it, just as you have on the satin. I can't tell if it's all one piece or not. But if it isn't, it should be 2 pieces. The bodice/dress will be fine with or without straps. But the lace shawl should be seperate with the high collar ruffle and fastened with a small button at the back.
In regards to the belt. I love the quilting work, but feel the lace around the cameo needs to be replaced as it cheapens the overall look. The lace join looks particularly messy and is best placed at the bottom of the cameo.
For the skirt, it seems like you have done a circle skirt that fits to your waist measurement? Using that method you'd need another one the same size, and then have them both gathered in at the waist. It'll create much a much nicer drape over the crinoline/petticoat.
Speaking of, at the moment it seems to give too much of a bell shape when it needs to be more A-line. If you don't want to add more fabric into the skirt. Then simply reducing the size of the undergarments & altering it to fit the A-line shape will help give the skirt a better drape & look! (Which I'd suggest doing either way desu.)
Feel free to ignore my advice/not respond as it is unsolicited, and you have no reason to listen to some random anon on 4chan. I'm just a huge Sakizou fan and see potential in your work with just a few tweaks!>I'm self taught so sorry if there are a few things I have named wrong. They're just the most fitting things I could think of to describe what I mean.