A frequently asked question is … How do I align my pictures in the sheet ? Well, it’s very easy 
As you remember the pictures are grouped to shapes and the shapes determine the size and position of the pictures, then we have to align the shape layers in order to get the pictures aligned.
I’ll show you now how to align the shapes, here we have a sheet with some shape layers open in Photoshop
Now we have to select the shapes to align, please click at the first shape in the layers palette, then hold down the CTRL key and click at the other two ( you may also use Photoshop’s autoselect feature for the Move tool).
Once selected the layers please select Photoshop’s Move tool in the Tools bar, you will get an options bar just beneath Photoshop’s main menu ( if you can’t see it please select Window – Options at the menu). In this options bar you will see at the right part a serie of small icons for alignment
Click at the one for aligning left and you will get the 3 shape layers aligned to the left part
Of course you may select other alignment options like center, right, bottom, etc and you may also space the layers evenly between the first and last. No more need to place complicated guides to get perfectly aligned pictures 
