I start by imagining what I want to make. I then draw the project, and I try to imagine how I will build it as I'm drawing. To start construction I just jump right in it and try not to overthink things. I've found that if you think too much you tend to never start or become intimidated by the project. The first step is to build a skeleton. While building the skeleton I make somewhat final decisions about what the shape will be. As I'm building I play with the form adding and subtracting pieces of the skeleton. Then I cover the skeleton with plywood. Next I fill all the cracks with filler and sand all the edges clean. After that I fiberglass it. When the fiberglass dries I cut holes for all the windows and build in windows and waterproof.