Robyn - I've posted a thread for all the details - have a look.
Each block will be 12", and if you decide to make one a month for the whole year you will get the basis for a nice single bed quilt (you need sashing, borders etc)
You can use any multiple of blocks to make smaller projects. 4 blocks would make a nice floor quilt for a baby. 9 blocks a nice picnic rug or blankie for in front of telly.
1 block would make a cushion!!