Here's one of my favorite and easy to do nail arts. Simple and girlish ;)
1: Polish the nail with pink color.
2. Apply the top portion of the nail with glitter.
3. Form five 3-D white flower petals with acrylic (you can try using white nail polish and use the nail art brush to draw it too)
4. Add rhinestones to the center of the flower and below.
Source: nailsmag