I have to give credit to my brother Jon for this idea. If you have small baseboards and want to make them look bigger you can simply add another piece of trim work a few inches up the wall from your existing baseboards. Paint the new trim and the wall between, the same color as your existing baseboards and your eyes are tricked into thinking it is one large baseboard! Same trick can be done at the top of your walls to make your crown molding seem larger. In our other home we had very small baseboards so we added to them throughout our whole house. It really dressed up the house. This particular extra piece of molding was even hung upside down, we felt it looked better and tied into our baseboards better that way.
Because our extra piece was upside down, the thickest part of it was at the top which made hanging vertical moldings easy since they could sit flush on top of it.