I've got the hang of the grannies too and do all the centres, then round 2 and then round 3.. the 4th round has been easy because it's the JAYG round and usually all the same colour.
After this row of grannies, there's 9 rows of triples, so I can crochet away with TV this evening and enjoy myself.
Looking at it on our settee perhaps I should have done the Autumn coloured one, so I might have to do that one too??
The designer Marion Mitchell has a blog if you're interested.
Some very lovely blankets shown and I could make them all.