I’m not a mod, but Im pretty sure I can field this one.
Well, if its for the big screen, the resolution is definately too low at the size you just specified. Keep in mind that simple Mini-DV is at 720×480… so you do the math 😉 If its going to be outputted to 35 mm film, I recommend a minimum of 1080×720 for resolution.
As for your second question, duplicate the layer that contains the footage of the city. Rotate 180 degrees and make sure that both horizons meet.
Mask out the water in the Duplicate so that you don’t have water showing up in your original cityscape 😉
Now, make your duplicate layer like 10% transparent or so. Now add DISTORT—-DISPLACEMENT MAP. In the settings use the original cityscape footage as your DISPLACEMENT MAP LAYER.
Change the Horizontal and Vertical displacement to Luminance and play with the settings until you get everything to your liking.
I think that should pretty much do the trick.