"Would I do better with multiple shops?"
Hollie from blueberryshoes to help answer this question. Hollie until recently had two shops on Etsy - one for fashion and one for art. Since she has experienced the one shop and two shop worlds, she is a great source of advice on the topic.
When Hollie opened her art shop, imfromthewoods, in addition to her main shop she noticed something happen immediately. "My attention was split and naturally fell onto the more successful shop-my original one. The fashion shop flourished and the art shop fell behind... In time I just didn't care about the art shop at all." It was after much deliberation that she decided to incorporate her art into her main shop not necessarily knowing if it would all flow and thrive together.
Through our conversation Hollie stressed that time is the biggest factor in deciding if you can manage two shops. "There is much power in giving a shop attention, promoting, signing into etsy with that one username, recognizable avatar, etc. Branding, really." No one is saying two shops can't be successful, but it is a major time commitment. "It takes more time and more energy to care for both... It's about how much are you able to give of yourself. And will you always be giving the same amount of attention to both?"
GlassAli, when I look at your shop I don't see a reason to open an additional shop. It's obvious to me that you enjoy making the lampwork bead pieces and have invested most your time there. This is your niche! If you work on refining your shop to focus on this style of items I think it will help your success. Now, if you really love the beaded and stamped jewelry just as much you can work on incorporating it with the lampwork pieces like with the great charms above. Or perhaps you could open another shop. Just be sure it is a time commitment you'll be able to make.