hmn... interesting. I figured out perspective today... from watching this tutorial over the weekend: John Derry Tutorial on preparing an image in Photoshop for Painter - isn't it amazing what's available to learn on the Internet these days?
Our hawk was back and I snapped these shots from an odd angle... here is the first one before I realized I could "fix" it to make it look more like it's supposed to.
And then I had that "ah-ha!" moment... and tried to to what John had done with the building in his tutorial... and wow! Look! Isn't that better?!