I took this picture around 530 on a cloudy day. I took it on a tripod, took it from left to right, everything was manual WB, focus @ 1/80 f/4 with ISO 100. I know my WB is off, but i'm just practicing.I used my 18-55mm lense and zoomed all the way out. I used photoshopCS2 and did photomerge. Is there anything i can do to eliminate those lines on the sky. Unless if there is something i can do in PS, like patch tool or something. Thanks for any advice.