I feel like the lines in the background are contradicting the flow created by the direction wheatley is looking, he is drawing the eye in towards the right, while the background is pulling the eye back into the left part.
I tried to focus stuff on the middle, and made Wheatley sort of off-center, just to add variety. :/ I get what you're saying though.. Unfortunately no.. the highest size is 1304x870. You can get that at the bottom of the OP if you want. Glad(os) you like it [had to ]