Thanks everyone!
So, I replied to the construction questions in message, but figure I'll post it here too, for anyone interested:
Basically, for Mini Katniss, I made 13 big circles of the base skirt fabric (I used organza). I folded the fabric over itself and cut circles that had the diameter be almost 60" wide - whatever the width of the fabric is. Yeah, there will be waste.. In the center of that circle, I but another circle with varying diamters, between 8-12". Cut a slit from the outside of the skirt to that insane edge, and you have 1 circle ruffle.
On each of those, I sewed the main ruffle. After playing around with it, I found that cutting ALL my fabric into 2" strips and sewing them together up on long side worked best. I staggered the ends. Basically sewed halfway up one strip, laid another on top it at that point, sewed the two together until the first strip ran out, added a new on on top, so on... until I was finished sewing all of it together. I used 15 yards of extra wide tulle. As I was sewing, I was ruffling them - I had to do it manually, if you have a ruffler, that would be better. IMHO, would have been worth the $50 to order one at the time, I just didn't have the patience to wait for it!
Then what I did was sew satin ribbon to that sewn edge. Used a straight stitch, and positioned it to cover the seam. Then I went back and did the same with a second strip of riibbon up the back. I recommend ordering the satin ribbon, single face, from papermart - you'll need a LOT.
Anyway, I just did the one seam up both sides, on the edge just under the same (IE between the original seam, and the rest of the tulle ruffle). As I sewed the ribbon/ruffle to the organza circles, I did it with a straight stitch on the OUTER edge of the ribbon only - going through both layers to secure it all down.
Folding it over would be time consuming, and also would not allow for staggering the ends - wouldn't want them to look obvious. As for the two ribbons, it completely contained that sewn edge of tulle and makes it look much cleaner - you can see it through the organza.
Anyway, once you've got all your circles ribboned/ruffled up, take two and sew them to a regular base full skirt, so that their bottom/outer edge of the circles is at your needed hem length. Then you'll want to pin up remaining circles kind of randomly - somr around, some curving up, etc, to allow for the cascading effect.
Does this help?