Uh-oh! Here is a spiffy sample showing how folds/ruffles should be drawn.
Steps 1-4 show the step by step for creating the folds =
1= Begin by establishing a few squiggly lines. It's similar to writing with an "S"; playing with the direction in a snake-like way.
2= Don't with the normal "U" siding, just draw lines as the step shows on the opposite side of the "U".
3= Don't draw on the upper "U" side this time; just draw short lines as the sample shows underside of the "U"s (look closely).
4= Repeat the 1-3 step to draw a few layers for Lolita dress.
A is the basis appearance for the folds. Just start with W line first, then draw the line following the direction of the arrowhead here.
B shows the repeat (1) shape like writing the opposite V again to create the (2) one (1) , then create the (3) on the (2), repeats the opposite V and so on to create the basis folds line.