Not the best of photographs, but I gotta say, one of my favorites. I don't know the first thing about beautiful nails or okay nails for that matter. I do know that this sign lacks all kinds of things unless you really like red. Lets focus on the second word "Nails" (located at the bottom right).
Not only do those fonts not go together well, but those two dots perfectly stacked above each other (capital N and i) are almost hypnotic. Why would someone who owns a sign shop ever think that these two fonts would ever work well enough together to set it, cut it, weed it, and then stick that vinyl lettering to some Plexiglas. Then we can consider the white rounded rectangle as a space to fill. The negative space of that shape drives the viewer nutty! Everything feels smashed to the bottom and ya just feel stressed out! When I worked at a sign shop while living in Florida we ran into a few situations that were very difficult to solve. Shop owners had existing signs and wanted new names made to fit those spaces. It took time and ingenuity. But!!!!!!......my boss talked about his logic when reaching a final solution. He used words like "space" and "comfort" and "stress" when considering placement of his final choices. He made sure that things were never too close to the frame or outer edge. He made sure that spacing of all parts "felt right". He made signs well. When you looked at them, you read them. You didn't scratch your head. You didn't consider taking pictures of them and blogging about their issues.
Again, I am sure that there are fine folks in that shop that really make your nails "beautiful". The sign............wow.