I'll let you in on a little secret, I LOVE to build stuff. What kind of stuff? All kinds of stuff except for electrical...only weirdos enjoy electrical. While I've been building all sorts of things for a while, I've been messing things up for even longer. The first playhouse that I built looked awesome, but it fell over the first time Parker opened the door.
Here's the thing, creative expression (however you define it) is not necessarily dependent on skill level or specialized expertise. I believe that willingness is where all creation begins. Willingness to try. Willingness to fail. Willingness to be keep at it. For me, the LOVE that I have for building stuff is a really about the process of creating something, particularly something that makes someone else happy.
So what does any of that have to do with learning to build a door? Far too often, people say, "I could never build something like that." That will only be true if your unwilling to try. Some of the most amazing creations are the culmination of a myriad of beautiful mistakes. So grab your drill, borrow a saw, and pull that wood out of the dumpster and create something magical.