It's a nice change in structure, but there's a couple things here that make and break this.
1. The contrast with the text in the footer and sidebar 2. The fact that you only used appealing dummy deviations images. Replace it with average or below average images, transparent gifs, etc and the feel could drasticly break the feel of the square thumbs you have going on. 3. The pixel font for the footer isn't very suited to the rest of the design.
its more simple then the orignal one which is a fact i really like. but i guess for browsing through tons of images it might get exhausting to have all thumbs so close to each other as u did here ... Stil a great project with many improvements!