I would love to see pictures of some of your garden art Beth. Do you have a website with photos?
Well, I spent ten minutes this morning looking at the best/worst dressed at last nights golden globe awards so I am feeling uniquely qualified.
There are all these beautiful people with well toned, shapely bodies and they can still manage to look terrible in the wrong color, the wrong style or the over designed dress or suit. Same thing happens if you put the most glorious outfit on the wrong body. So I guess you have to develop the ability to see clearly, edit with purpose, listen to the right people and fail many times before you nail it.
Same with pots. Each element has to complement the other and the ability to do this comes with time to train your eye to be a good judge of what you are seeing.