A photoshop hint

Don't want your pictures to appear like you are standing in front of a circus mirror when you change the shape? There's a way! An easy way.

To prevent your photos from being stretched or squished when altering the size use free transform (ctrl+T or apple+T if you are on a mac) and then--here is the trick-hold down the Shift key while changing the shape. This will keep your picture in proportion.

Ta da.