Hannah, yes I do my own custom framing. Initially I learnt for myself (now I do framing for friends and co-workers), I was tired of paying a fortune to get the smallest piece framed! Did you know that the average framer's mark-up is 300% ?!? I have a really great supplier within a 15 minute drive, the staff there now knows me by first name, I do enjoy stopping in to pick moldings and mats. Whenever I have a question or I want to talk over how I'm going to do what I'm visualizing they're happy to help, I mean I'm no competition for them. Their main business is wholesaling but they have a busy custom framing business as well. Hannah if you're interested in seeing some of the framing I've done check out this post from earlier this year. I've framed stitching, photographs, watercolours, oil paintings, a baby's first outfit. You can get very creative with framing.
By the way I'm a huge procrastinator when it comes to framing stuff for myself.