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First of let me say I'm a bit of a fan of Arsenal. I think we've purchased one pack from you guys - good products.
On to the critique - professional presentation, clean layout, nice use of contrast.
MY only comment would be about picture 3. I would like to see that right side box be replaced with much larger typography. Since you're going to have a slider there from what I can tell, you should be able to use some custom fonts and use nice big typography for Photo-realistic. Underneath you can have an image / html, etc. But that box right now is outweighed by the shirt on the left.
Another little discombobulation is the two boxes underneath. I think you don't need those boxes themsvelves. The content itself should enforce the grid layout just fine. Right now the way they slide under the horizontal line doesn't look right.
Hope this helps.

Oh, I'm glad you're familiar with the Arsenal, thanks for the kind words.
I really like your ideas. Will definitely be implementing those suggestions as soon as Photoshop recovers from a crash :-(
Thanks!