I'm guessing it's the "bland" you received in 2-3 different reviews of the screenshot.
While it isn't the best shot in the world, I really wouldn't blame you for not entering again because of people calling your shots bland without saying anything about improvement. I received the comment "bland" for several of my previous SoTW's that I worked hard on... with no help on what to improve... so I stopped entering so often.
LinktheMaster: An above average Pure cave. I like the touches such as the supports under the catwalk and the statues.
Ian: Curses! I knew I should have entered a shot with that set! Anyway, this is second place for me. I love the originality of the shot in general with the mix of good tiles.
PolygonX8: I like the sprites and custom tiles.
Jaivaz: The mountain tiles and water look pretty good. However, I suggest adding ripples to the rock sitting in the middle of the water and possibly a better transition between the waterfall and edge of the mountain.
Radien: I'm voting for this shot. It's got another nice mix of original tile ideas going on.
Mr. Z: There is probably not much you can really add easily to this shot considering it's a custom boss, but I'd suggest something like a symbol on the floor and some other floor details to spruce up that Ganondorf battle.
Hero Link: Another shot from that first quest looking remake. Nice.
NoeL: Nice original tiles. However, the main thing that might need a little work is the plain looking grass and dirt areas. You need more grass patches and stuff, possibly. Overall, good custom tile work.
UpbeatPenguin: You have the right shot this week. Well, this is a good shot for what it does. I like the ice tiles, though.