Editing a photo for a passport: 2" x 2" overall, 1.25" chin to top of head

[Am_I_Lame?]

I have a photo from my iPhone I'd like to turn into a passport photo.  The requirements are:

1.  2" x 2" overall size

2.  1" - 1.375" from the bottom of the chine to the top of the head (I'm shooting for 1.25")

The image comes in at 42"W at 72 DPI, so I use Image Size convert it to 2"W at 600 DPI (my printer resolution) and crop the height to 2".  So, now I have my 2" x 2" at the right resolution, but the head is  too small.  How can I get the head and overall image the right sizes?

Any tips greatly appreciated.  

[Semaphoric]

Why not just bring the head size to 1.25", and then crop the image to two inches square?

[Am_I_Lame?]

> Why not just bring the head size to 1.25"

How?

[Semaphoric · Accepted solution]

I take it this is going to be printed.I would do it like so:

In Edit >  Preferences > Units & Rulers, set Units to Inches. Have your original image open, and open a New image, two inches square and 300 PPI (print resolution). Show the Rulers, and drag down Guides for the top of the head and the chin, 1.25" apart, per the Rulers.

Using the Move tool, go to your original image, and drag it over to the new doc (this leaves your original untouched). Before you commit, use the transform handles to size you image [copy] to the Guides.

Save this as a separate file, which you could send to someone else to print, and you still have your original.

[Am_I_Lame?]

Aah, perfect.  Thanks!