feistiestcrayon - It is a little pricy. I paid $34 for a 19.5"x29.5" sheet (including shipping). When I get a chance to play with it I'll see about doing a video or something if you'd like to show how it looks in person
Soulflare - She said earlier (I think it was on her facebook) that she likes using both but she's been using Worbla more lately because it's what she has on hand.
A great thing about worbla is you can use the scraps like modeling clay! So you can essentially use every little piece you buy! Which is GREAT! I hate wasting materials so much. Wonderflex is a little cheaper. You're looking at $28 (including shipping) for a 21"x 27". It's a little smaller and you'll end up throwing away scraps. I think there's some things that wonderflex would work better for I guess. I've done A LOT of research of both and I just like the idea of worbla better. I actually found a video (sorry also in German) that shows a few other things Worbla can do. It's a little more general. Make sure to turn on the subtitles. http://youtu.be/uZ8F8ahYj8E
Mine's sitting at home right now. Can't wait to get there and play with it!!
munchkincora- Yui would be easier by a long shot! Welcome to the thread!!
momomilk - YES
I love Lisabeth so much!! I'd say do it since there's SAO guest artists!!!
Stars- I know that feel. I have the same issue. =/ But you never know who's cosplaying it that isn't on the thread!!
Li_Syaoran - Can't wait to see pictures!!!
Xanarcah - How many costumes do you need to do within those 2 months. She does have some easier costumes then the default. Or you could try to do Yui. Her's is easy!