From doing it before, running 2 shops is very hard.
I had food, and the shop I have now. One always gets neglected, it's very hard to focus on making both shops grow.
That advice: Stick to one shop.
Because your shop has both handpainted coffee mugs and the word art I think you could leave them together. There is a similar theme going on.
Do you enjoy doing both? My second piece of advice, is stick with what you really enjoy, because when it becomes work it gets hard to keep yourself motivated to doing it. Also, which makes money.
My opinion the coffee mugs are a more unique place for you, everyone is doing the wood blocks. Maybe expand your coffee cup words and line, and focus on that.