We love to make tutu's in this house, and considering our cat Chowder claims them as his own its probably a good thing. They are super easy to make and really don't take up much time. I think actual start to finish time was like 20 minutes. This was not including interruptions from little ones :) otherwise it took me over a hour. Anyway below are some pics and directions. Realistically you'll only need to read them once and then have the hang of it.
And the next step might just be the second most fun part of this whole project, picking your tulle! Today little Miss Izzy picked light pink and red!
I am awful at measurements so for this I took the length of how long I wanted it to fall on her leg and doubled it in length. Next put the elastic on you leg, see pic below. When your making them for a very small waisted kid this can be a little unpleasant lol. So you will want to fold the tulle in half lengthwise. Pull the tulle under the elastic so the loop is on one side (on the knee side) and the cut ends are on the other . Pull the looped end toward you and then the cut ends through the loop. It should look like the pic below.