Ronda, I used bath towels inside of the bag to block it ... It really felted
well and the bottom shaped nicely on its own ... I did have to pull and "poke out" a bit where the top decreased and needle size changed, but it stayed "where I put it". When I attached the handles, I whipstitched the edges and then went back and forth some ... knowing I would be very hard on them . They felted almost like they had been "knit on".
Kimmie, I used left over WOTA that I purchased for Christmas gift hats and slippers.... I THINK .... it took ... three full skeins of each color and then a little more for the handles. I don't have the pattern with me, but will check the yardage this evening. I just kept going back to the bin and getting another skein when I needed it. I am working on one now using only one strand of WOTA and a strand of gray, probably fingering weight that I got a CONE of on ebay. The "fabric" will not be as heavy as the one with two strands of WOTA.... but I am hoping the shape will be as good. I wish I had kept better track...
Follow Ingrids advice .... TRUST THE PATTERN!! That is what really made it's shape so pretty.