Welcome to the forums Donokron.
How far have you progressed so far with this game, are you still in the idea phase? The screenshots look pretty nice, very true to the OOX style. Man, I loved those games. As far as the screens go, the middle one, with the flower, is a bit busy, as far as colours go it's a tad overwhelming. I'd like it if the flower was a different color, like blue or green. But you know, that's just me, I have very sensitive eyes, haha.
So the first shot, without Link, he's under the sand? That's an interesting ability, I'm sure you must have lots of sand in your game, haha. Take those mole mitts to the next level! I'd be interested to know how that'll work out.
I'm with Stig, though, are these mockups or screenshots from the game? Because if you've already got that much progress, that's great.