I do it like this: I take about 2-4 double-ply squares of TP, and keep folding it into rectangles smaller and smaller until I have a rectangle about 2 inches by 3 inches – ish. Then, I roll one end of the TP rectangle a tiny bit to create a spot to “hold onto” as I wipe it downward. The grip ridge is the opposite side than what you wipe with. Smooth side = wipes across vaginal opening. Grip ridge side = faces away from vaginal opening. I hold that little ridge with my thumb and forefinger and wipe top to bottom, from clitoris, really over the vaginal opening (sometimes I “scoop into” the vaginal opening to ensure I get anything that’s there), and then downward across the perineum, stopping before the anus.
PS – After urination, you can definitely gently dab most of the urine away before wiping to check for CF. I will usually dab lightly, get most of it, and then use a separate folded square to check for CF.