this is another simple yet beautiful nail art.
for this you just need your favorite 3 nail colors and a nail art striper.
apply lighter color among three colors on your nails
then using striper draw a diagonal line of another color.
now using striper draw another diagonal line to make cross (X)
now using same striper apply nail color to the upper and lower triangles so formed.
you may use toothpick to do so.
now using 3rd color and striper draw a line parallel to the 1st diagonal line (of second color) below original line.
draw 2nd parallel line above original
now follow the same procedure and draw parallel lines to the 2nd diagonal line
and you are done