Polish the nail black. Use a pink striper to add a checkered pattern on the free edge. Use a black striper to clean any uneven lines.

Apply a small ball of orange acrylic onto the nail, then form it into a balloon shape. Apply a tiny bead of orange acrylic to the bottom to create the mouthpiece. Repeat the steps with blue and green acrylic. Use a white striper to add a wavy string to each balloon.

Apply a large ball of yellow acrylic to the nail, then flatten it into a trapezoid. Use a toothpick to make vertical indentations. Repeat elsewhere on the nail.

Apply a large ball of teal acrylic to the top of the trapezoid, forming it to look like a cupcake top. Add smaller beads of teal acrylic to the bottom of the cupcake top. Repeat the cupcake top creation with pink acrylic on the second yellow trapezoid. Apply a red acrylic cherry to each. Add beads of colored acrylic as sprinkles. Add clear and pink rhinestones.