I know, weird...
…but weird has it's place. Anything teen, '60s or '70s, rock-n-roll, op art… all work. The wavy one goes to water with a smeary misty watercolor treatment. And the right humorous get well card could work with either. I think these texture plates are emotional rather then pretty or grungy. I used a subtle tones rust patterned paper with the wavy one and sanded the raised areas which is very interesting. Tie dye paper is a gimme with this set. How about pink or dark navy sparkles? These plates take some courage and creativity, but I think it's worth it.