Check out the patch notes for the v17 Precursor Update here:

UGC: Preview Multiple Files

MapleStory 2 Rep: 1,950
Posts: 55
edited 11:30AM October 20, 2018 in Suggestions and Feedback
Hi everybody, figured I would post a thread about this. Being able to preview more than one piece of UGC at a time would be a huge help. For those of us who may be working on outfits made of multiple connective parts it's a bit of a game of eyeballing, trying to go off of the templates individually, lining up screenshots, etc. Somewhat stressful if it's a piece being made for someone else, as well.

really simple mockup but maybe it gets the idea across:


edit: a good point that was made, this feature is already available in the cash shop. hopefully that means it wouldn't be too hard to implement?