Your shop is lovely... your items are very pretty and seem reasonably priced, considering the quality of materials and workmanship (altho I know very little about your type of product).
From browsing thru, I think that aside from bridal or prom, some pieces might also be appropriate for Renaissance Fairs, which are all over the US at different times of the year, mostly Fall here in the South... and of course, costumes for February Mardi Gras in New Orleans, Halloween in October. I've also seen that according the the "fashion experts" feathers have become quite a trend, so that's in your favor ;)
Perhaps you could develop a line of smaller hair clips, less opulent pieces, with less materials cost, but still in your style... or even something for little girls and toddlers, like these little beauty queen contestants that seem to be so prevalent now, especially here in the South.
anyhow, just thinking out loud ... and babbling because I'm tired and it's way past my bedtime, lol