Yeah, maybe spending some time up front and showing pictures would help
I tend to find out after the fact that they don't like it and then have to do the explaining at that point.
I had a call over the summer from a potential customer that had their shrubs pruned last year by another landscaper. I didn't see them at that point but from what I could see they were done picture perfect, but the customer hated them to the point they wanted them all ripped out. Had I done it, it would have looked much the same. I actually referred that one to my 18 year old son, since they had a lot of other stuff they wanted done that was more suitable for a kid...just someone to help with the stuff they couldn't manage themselves including some indoor work.