Love the picture of Corey kissing Lily on K ~
there's just something about a man kissing a baby...
1 - Go through photos from the first 2-3 years of the child's life and pick out cute pictures that you like, trying to find one for each letter. I usually have like 60+ photos that I narrow down. Q is usually Quiet, sometimes it's Queen. For X and Z I've been okay with using a word that had X or Z in it, like Box, Six, or Buzz (Lightyear). I'll write out the ABCs and then look at each picture and see what letters I could use it for, since I usually end up shuffling them around from one letter to another to get the pictures I want and covering each letter. Just keep narrowing it down.
3 - I've always used this type of Sketch notebook for the paper, since it's acid free and the right size for what I want, and I usually have had one on hand.
6 - Get it laminated - Find a store that has 10 milimeter lamination, as it's the strongest and will make it most durable from when the toddler's handle the books and write on them and get their sweet sticky hands on them.