Here's how
to put it all together. Chances are you'll spend longer reading this
tutorial than you do sewing.
Step
1: Layout.

Step
2: Channeling

If you lay
the channels out with enough extra for a small rolled hem, you can
stitch it down in the next step and save yourself some minor hassle
in Step 5. More channels means finer control over the shape of your
skirt, but also a less flexible skirt. Your call. I'd personally recommend
between 3 and 6.
Step
3: Straight and (kinda) Narrow

Indulge
your love of long, straight seams! Two per channel, one at the top
and one at the bottom.
A construction
note on this step: my ribbon was 2" wide. I bought a spool of
white bridal ribbon on super-clearance, but this is a great time to
use up Christmas ribbon ends or whatever is on clearance at the store
when you go. Make sure it's fabric ribbon, not acetate. Acetate
is crunchy and will disintegrate.
Isn't it
nice to think that at this point you're about halfway done?
Step
4: OMG RAW SEAMS KILL KILL

Time for
a French seam! Fold the muslin in half so that the channels are on
the inside. Run a seam up the fabric 1/4 from the edge or as close
as you can manage. This is why you made the channels shorter than
the fabric in Step 1. Don't sew past the bottom of the drawstring
channel.
Step
5: The Last Sewing You Have To Do

Turn your
spiffy new fabric tube so the channels are on the outside, and run
another seam 1/4" from the edge you just sewed shut. Just like
last time, don't sew past the drawstring seam.
Once you
have the French seam finished, there's a little bit of handsewing
you should do for the sake of durability. Nothing major: just put
a hem on your channels and close the top seam around your drawstring.
Leave a small hole, enough so you can pull the drawstring cords through.
Step
6: Makin' Hoopy
This is
the easiest part. You know the measurements in Step 1? Remember the
diameter of your skirt? Cut a piece of hose a couple inches shorter
than that. That's your bottom hoop. Cut the rest of your hoops in
gradually descending sizes. Be generous--you can always trim, but
go too short and you'll have to cut a new hoop. Even that's not so
bad, though...you have 100 feet of the stuff, right?
Step
7: Tubular

Fasteners!
This is how you stick one end of a hoop to another hoop. The slit
ends will compress enough for you to jam them into the ends of the
hoops and hold them decently even without tape. However, based on
experience, I'd definitely advise that you use some tape anyway. You
can tape one end in permanently, and use non-permanent electrical
tape to keep the other end nice and cozy while you wear the skirt.
Step
8: I Like Big Hoops and I Cannot Lie
Basically,
you are done. Thread your hoops into the channels, use the fasteners
from Step 7 to join the ends, and trim your hoops until your skirt
is exactly the size and shape you want. Try it on. Bounce around.
And then take the hoops out and coil them up all nicely for storage
and transport. Ta-daaa! Now you can hide things under it, like this:

There's a saying:
"If you have a difficult job, give it to a lazy man and he fill
find an easier way." Whoever came up with that had no idea of
the creative power of a lazy woman on a budget.