On the first two page spread, she has made a border of 11 3×3 inch photos around the outside. Each photo is each month of the year. In the middle, is a bigger 12th photo of him at one year old.

The rest of the scrapbook is made up of events - birthday, Christening, halloween, etc.

You can also consider doing a coffee table type book of all the pictures you have (20×12=200+ pictures). Most major online photo developing sites (costco, futureshop, etc) have an option for a picture book. Or, if you wanted to do something a little nicer, you can try something like “blurb” : http://www.blurb.com/

It is not too complicated, and not too expensive. I am going to be doing that for my sons, now that my 2nd has hit 1 year old.
References :
http://www.blurb.com/
http://www.splitcoaststampers.com/