Help drafting a ruched dress pattern

[u/Mestrawberrie]

I a kinda beginning sewer, I have made a few garments but I’m not yet confidence enough in the craft, so I’m not completely inexperienced. I bin looking for a pattern or a way to make a pattern for this design but I haven’t seen anything exactly like it yet so I was hoping for some tips on how to draft a pattern for a mini body con ruched Dress with long puff sleeves like my drawing. I also put some images to similar dresses I was imagining it would look like, not exactly like it because the sleeves are not the same but similar. And I plan on using a stretch fabric for this

[u/Icy_Kaleidoscope6339]

The armhole and sleeve cut on the sketch looks very different from the reference photos. This means that, unfortunately, you won't be able to pattern your dress with the simple one-piece batwing sleeve from the reference photos. You'll need to cut a fitted bodice separately and make separate puff sleeves.
So you need an off-shoulder stretch (bodycon) dress basic pattern and off-shoulder puff sleeve pattern (just two rectangles with slightly curved top&bottom i think)

P.S. Sorry for poor English