Trim Molding is literally a secret weapon for inexpensive interior design projects. Trim molding can inexpensively add sophistication to a room.
I use trim moldings to create large custom mirrors. Large mirrors are expensive and by using trim moldings, the Do-It-Yourselfer can get the exact size that they need.
To get the look of a high-end kitchen, add crown moldings. If the D-I-Y'er has an ugly kitchen and a tight budget, adding molding can add style. Now here is a tip: you can order gorgeous moldings and even hand-carved moldings online. Paint the moldings, and cabinets. You can dd a glaze coat over the entire cabinet project and you'll create a high-end cabinet make-over on a budget.
As a designer I love fireplaces. To save cost you can order fireplace mantels online or build one using trim moldings. If you are design challenged, ask a lumberyard to help you. Print out a picture from a magazine, take it to the lumber yard and ask them to help you cut the correct pieces. This is also a great project for an hourly handyman service.