A key but, often over looked is how to build a shower enclosure which is easy maintained. There are a few basic consideration which you should consider when designing a shower. Most people only go as far as the pipes are in this wall, and the drain is in the floor. I don't like to take a lot of time to clean my shower after every use. Some people do, but not me. I do use a squeegee and quickly go over the glass and shower walls just before I get out of the shower. It takes very little time and keeps the shower looking great. I come in every week or two and clean everything with the repellent wash.
When you are designing your shower door are are a few things you should think about. Building it correctly is key to having a shower last for years. A lot of people get get excited about how great their new tile looks, and fail to pay attention to some small things which can be a big deal.
1) Avoid water puddling. First of all you should have a slope of 1 to 1-1/2 degrees into the shower and all flat surfaces such as the curb or seat into the shower. Make sure that the drain is the lowest point of the shower. You don't want to have a puddle of water right around the drain. The shower door is going have water running off it onto the curb. Without the slope on the curb water can build up on top of the curb and escape the the outside.