Quilt show

More blocks, two more to make then I can put it together.  Just lacking in motivation.

We went to Cootamundra last weekend, and they had a quilt show at the town hall.  There were some fantastic quilts.  Ian came too, and he was impressed by the quilts on show.  He is all enthused about me making a quilt of an aerial view of Australia, showing the colours of the different areas.  We have one of these pictures at home, and he thought if I increased to size to about 2m x 1.7m, it could be pieced with 1" squares.
I am giving it some thought but really don't know where to start.  Any ideas?
 It is great that he has faith in my ability to pull something like this off.  Still, I will need lots of fabric, so I have a good excuse to visit fabric shops. lol
I have finished one of the Quilt aid 2010 blocks, and am well on the way with another one.
Cheers
 Elaine