The issue with those comparisons you put down is the fact that you're comparing a flexed elbow vs a straight elbow in your WIP photos, so if your straight elbow already has as many creases as a flexed elbow, when you flex it'll bunch up more. I also think the feedback stemmed from the fact that you have material that looks like its slightly extending past your forearm armour.
In the end though this is getting into nitpick level and in the end I think what you have may be fine for basic approval. I'll see if I can get the staff member who brought it up to comment here if they want.
Skirt front panel
This is why I waited for feedback from multiple people, and they all agreed your first try was too wide. We didn't just use the promo image for reference, especially since that image is shot from a lower angle so perspective may skew things just a little bit. The references we used were mostly from the Episode 7 scene where we actually see some sort of front view in a neutral position.


Sure, agreed that we can't use the reference points on the abs due to physical differences. And honestly it could be a combination of cut angle and width, and proportionality to the ab. Either way, we won't know 100% sure unless we get better references that involve a 0-angle shot of the front in bright lighting (and nobody wants to wait that long), and the consensus we have is that your modifications look much better and closer to screen refs.