Learning the Art of Frame Selection

Of all the aspects of opticianry that one should aim to master, frame selection seems to be the most difficult. I've read the excellent chapter in System for Ophthalmic Dispensing on frame selection, however I still find it difficult to produce good frame selections while helping people out on the shop floor. I try and browse 20/20 to look at ads showing well-selected frames, but it still seems difficult to pick out appropriate frames under "pressure", regardless of how much theory I study.

Does anyone have any suggestions to improve frame selection skills? Too often I'll pick out a string of frames and every one turns out to be less than ideal, and this leaves a poor impression on the patient. Is it just a matter of practice, practice, practice...?

Learning the Art of Frame Selection