“Clever” is optional. Clear is not.
You can have beautiful photography, a witty line, and a trendy font - and still lose the viewer if they cannot answer a simple question: what am I looking at, and is it for me? Good creative makes that answer feel easy. Great copywriters spend hours on simplicity, not because they cannot do fancy, but because simple is what survives a fast thumb.
If you only take one habit from this post, let it be this: before you worry about looking smart, decide what you want to be obvious. Everything else supports that.