When covering wings and trying to keep out warps, I cover the bottom panel then the top panel of each side immediately. Once I have the bottom stuck down, I go right to the top and mist the bottom while I'm doing the top. I never let the bottom dry out before the top.
Same method with doping, go straight from the bottom to the top of the same panel. Haven't had a warp since doing this. (kncok on wood).
I know most perople do it this way, just posting in case some one doesn't.
Bill <><