Royaldevon (36063) 2016-01-25 07:52:41Hi Pedro,
Using PSE10, I clicked on the rectangulee marker tool.
Then with the icon on the picture, click the right hand mouse button. This reveals 'free transform'.
Click the r/h mouse button again and select 'distort'.
This allows you to grab the top corners and make the building more vertical.
I'm not sure if you like it like this, as I do, or if you prefer the lens distortion.
It is just an option to try.
My warm regards,