Nursery- when did you start and what did you do?

[Snoopea]

Hi, I was just wondering when everyone started to get they're nursery ready?
I've picked and laybyed my cot, change table, car seat and mattress.
So far I've bought a bath and my pram, but my spare room is still a nightmare, I'm trying to move stuff out and I'm finding more stuffs in there than before, not to mention the rooms in need of a paint and I have no ideas on what theme or colour for my feature wall! My daughter has a hot pink feature wall and my son a deep blue feature wall, both are dulux suede effects paint and look great, but I'm stumped for colour it looks like another boy so I was thinking a limeish sort of green but I really have no idea where to start! I was wondering when you started your nursery/ babies room and what theme you chose?
Thanks in advance,
Confused and in need of inspiration,
Snoopea