I haven't finished my own playmat yet, but I've made a start on the one for my nieces anyway.
Now I know that nobody is ever going to accuse me of being tall, but you do have to admit that a playmat nearly my height is BIG.
For a little bit more reference - here is a picture of my (now seemingly small, and still unfinished after 8 months!) playmat sitting on top of the new one while I drew some of the placement lines on -
... I'm thinking it's good thing I've already started the new one, because it's taken a week just to get the layout planned and this little bit of edging/outlining done! It might not be a technically difficult project, but it is very time consuming.
My original plan had been get the mat done this spring (between their birthdays) and send them extra pieces at Christmas time. But then I started thinking how that would be months of waiting for the animals, people, houses etc that would actually be what made the playmat fun. I talked to my sister and ran a change of plans past her - Saving the mat till Christmas and dividing the animals and whatnot up advent-calendar style. She agreed it would be a good idea.
Now that I realize exactly how much bigger this mat is (I'm terrible at judging size based on measurements. Terrible!) I'm glad I've bought myself those few extra months. I'll need them!
I really really want to get this done by the end of the year, and so hopefully motivation will keep me moving along on it.