This project could be accomplished by people with any level of DIY. There are a variety of adhesive trim molding kits on the market with pieces that can simply be adhered to the wall, like Birdeco ...

Most small cove molding is the same height on either side, but it's better to double-check. Other than that, it's really that ...

Professional small-batch injection molding can be pretty expensive, and buying a manual machine can cost quite a bit. Of course, there are a number of DIY injection molding projects to choose from ...