I have used the Minwax Polyshade on occasion, and what you are proposing will work. However, the result you get depends alot on how good you are with a brush (and it needs to be a quality brush). The product needs to be floated on very evenly and not brushed back and forth. Be ready to do a lot of work at a go as cleaning the brush is a chore so you might as well get a lot of molding done at a go. (Suggest you finish whole lengths and then cut after finishing). I have had really good success shading and toning with the Polyshade by spraying it on with an automotive detail spraygun I got for about 30 bucks at WalMart. Do you have a compressor? (Airless sprayers not real good for this) This job will depend a lot on your artistic abilities, which is why I chose the spraygun as I have never mastered the one-direction use of a brush. (Looks real easy on that Polyshades commercial on TV, huh?) Good luck, Kizmet.