Sometimes art just does not transfer well.
Have you ever gotten a refund on postage? Or even post office credit? Well, I am definitely going to try. I bought these today. Was in a hurry so didn't actually look at them until tonight. They remind me of mud. I left some negative words about them in the Pen Thief's comments a few minutes ago. Then I felt guilty for leaving my bald opinions, so I enlarged the images for a second look-see. And . . . I like the art on the first stamp. I just don't like the muddy colors. Before you stomp all over me, remember that art is subject to interpretation. Now. Go ahead and have your say.
The second image is just boring and I want a refund on these as well. No wonder the post office loses money. I'd rather use a bunch of different stamps that might cover half the front of the envelope, rather than send these to a person. Some of my mail is depressing enough without me adding depressing postage. I can just see me sending a card to cheer someone up and they get an envelope with murk above their address. They wouldn't even open it! Or what if they burst into tears? Oh banish that thought! I want to spread a little color with my idiosyncratic mailings. At least a little mail art, coupled with a pretty, cheerful stamp or three might make you shake your head as you tear open the envelope, but at least you'll open it--perchance to read it and reply. So, there's no putting lipstick on these and convincing me they're anything close to being any more than what they are.
Aside: It's all about the values. The colors are too close in value.