Summarize:

Cut a skinny strip out of white crepe paper or tissue paper. Fold it in half several times, then cut a long, skinny petal shape out of it. This should give you several petals. Repeat this step until you have about 20 to 24 petals. Have the petals taper into a skinny tab at the bottom so that you can secure them more easily. If you used crepe paper, you can gently pull the petals apart at the center to widen them. If you used tissue paper, you can fold the petals over a toothpick or skewer lengthwise to create a slight crease. Make the petals more realistic by cutting a notch into the tip Begin by cutting a 1 to 2-inch (2.54 to 5.08-centimeter) tall rectangle from green tissue paper or crepe paper. Next, cut a jagged, grass-like fringe into one of the long edges. This will make the base of the daisy and help cover up the bottom part of the petals. Plan on making the rectangle about 5 inches (12.7 centimeters) long. You can always trim it down later if it's too long. Begin by folding a piece of green tissue or crepe paper in half. Cut a half-oval out of it, then cut notches into the curved edge of the oval. Unfold the oval to reveal your leaf. You can make as many leaves as you want. 2 to 3 would be ideal, however.
Cut petals out of crepe paper or tissue paper. Shape the petals further, if desired. Cut a jagged fringe from green paper for the flower base. Cut some leaf shapes, if desired.