My home doesn't look like that. It looks like this (see left). Piles of toys and in the far left corner the foot of a child who is screaming at me, "Mama, I need a tissue!!" Thus, my is-it-over-yet face.
Anyway, this isn't about how messy my apartment is, though as I type it is getting messier by the moment. It's about ruffles!
Because ruffles make everything better. Aprons. Tops. Underpants. Even chips:
1. First measure the length of the area you want to ruffelize (pretty sure that's a word) using your measuring tape. I added a ruffle along the curved hem of my apron above. The length was 44 inches (coincidentally that's also the measurement my 2-year-old gives whenever she measures anything, weirdo). Now double that measurement (88 inches, math geniuses) and that's the length you need to make your ruffle strip. Doubling the length will give you a really ruffly ruffle. If you don't have enough fabric or want less rufflyness (also a word), you can increase your length by a half instead: so in my case 66 inches. That's what I did.
I didn't have any white cotton that measured 66 inches long, so I cut a few strips and then sewed them together. Allowing for seam allowances widthwise (1/2 inch on either side), I cut three strips, each 2.5 inches by 22 inches. Use a ruler and a rolly cutter (that's what they're called, right?) if you have it:
2. If you have a strip that's as long as you need it to be, ignore this step. I sewed my three strips together, like so, clipping my seam allowances and pressing with an iron:
Let's see that ruffle again!