Cut the rolled dough with a cactus cookie cutter.

Bake the cookies on parchment lined cookie sheets according to your recipe's instructions.

Allow the cookies to cool to room temperature before proceeding with the icing.

Add about 1 cup of Easy Royal Icing stock to a bowl. Add small amounts of warm water to thin to outline consistency icing. Tint with green food coloring gel to achieve a light green color, or whatever shade of green you would like the cacti to be.

Transfer the outline consistency icing to a disposable piping bag fitted with a small round tip, such as a #2. You can use a tall drinking glass or a piping bag holder to keep the bag open while transferring the icing.

Pipe an outline around the border of each cookie. Add the leftover outline consistency icing back to the bowl and cover with plastic wrap to use later.

Allow the outline icing to dry for at least 1 hour before flooding.

Thin the green outline icing with small amounts of warm water to achieve flood consistency icing. Transfer the icing to a disposable piping bag fitted with a large round tip, like a #7, or the tip cut off. You can also use a squeeze bottle.

Transfer the icing to a disposable piping bag fitted with a small round tip, such as a #5.

On some of the cacti, pipe 3 long lines down the center stem and then two lines on each side stem. On the other cacti, pipe one or two small lines on the top of the center stem, two small lines on the bottom of the center stem, and two lines on each side stem, leaving the center of the cactus free to add an emoji face later.

Immediately after piping, add a few sugar pearls to the wet icing.

Tint stiff royal icing with pink food coloring gel to achieve a bright pink icing. Transfer to a piping bag fitted with a small drop flower tip, like a #106. Pipe a single flower at the top of the middle stem, or pipe a flower at the top of each of the three stems.

Immediately add a sugar pearl to the center of each flower and press down gently to get it to stick.

Allow the icing to dry completely, up to 24 hours.

If you would like to add emoji faces, use a black food coloring marker, such as FooDoodlers, to draw on two oval eyes and a smile in the center of the cacti that have no icing in the center.

Use a toothpick dipped in white (untinted) royal icing to add a small dot in the upper left of each eye.

Allow the icing to dry completely before storing in an airtight container or packaging in treat bags.