Actually, I get your point and I'm not taking it personal. You're right; they are actually simple but then, my aim is to inspire people to create better ones that'll in one way or the other help in the promotion of bitcoin.
but I'd rather not send stickers during a serious transaction. Just saying.
Well, some transactions could be too official for you to use them. However, such stickers are also suitable for some transactions (e.g a transaction with a regular customer, a trancastion with a friend who doesn't know about bitcoin, etc).
I get what you mean. I was talking about how specific the text is on your stickers. I think it's more important than how simple/complex they are and how professional they look tbh.
For example, I'd make a sticker with the text "Have you heard of Bitcoin?" instead of "I accept Bitcoin payments". "Have you heard of Bitcoin?" could be used ironically or non-ironically in many contexts. When someone complains about their bank, send a "Have you heard of Bitcoin?" sticker and it'll make the convo more interesting.