Monroville said:

While it would be nice to see a cloud or two, maybe just changing the the color of the blue to something along the lines of the second pic by Vaderios would help make it look less like a set. That way you wouldn't have to worry about tracking issues (if the blue sky above was clear, you would just have to change the tint of the blue).

Also, a quick question: I know you said you weren't going to release a blu-ray version, but will the AVCHD have a decent bit rate? If so, about how big will it be (8gb, 10gb, etc)?

The skies have already been tweaked in the colour correction stage. The AVCHD will be a DVD-9 so the bitrate will be around equivalent to that of the original HD source file