I assume you don't watch professional sports and then think you can play the game as well as the athletes do it. The same can be said for FMQ. Many, many of the videos on YouTube are done by professionals. Leah Day is a great example. Don't beat yourself up for not playing as well as they do.
Practice on some smaller projects. Placemats and hot pads are good ones. Not much investment if they look bad and who really cares if you grab the cookie sheet with an ugly hot pad?