Here's my finished shower!
We had our shower updated in the master bath of the house we just purchased. The rest of the bathroom was left alone. The original shower was a prefab unit, about 48 x 34. It's on the left in the picture below.
Left of the shower is the door into the bathroom. The door you see in the photo leads to the toilet room, and the toilet is on the wall adjacent to the shower. We didn't want to move the toilet so we couldn't make the shower wider. We instead extended the shower into the room a couple feet, making the angled wall next to the shower straight.
I found a picture on Houzz I liked that I used for my tile design inspiration:
My finished shower is 48x58 inches. The white tile we used is imitation calacatta marble, the green at the top is green ming marble. The fixtures are Grohe. We still need to have a glass door added.