Ali, there is a company called Universal Arches that have the kits you can purchase to do it yourself! (Marine spouse here!) I've had to find ways to do things ourselves. We live in a Spanish style home in Southern California. I wanted to change our doorways and even the kitchen ceiling to an arched version. Found them and am very excited to get started. The arch kits, which are amazing, start at only $19.99 for a 36" doorway. Look for them on youtube and you'll see how cool and easy it is to do something like this!