To make a cookie beach umbrella, you will need:
You can use a plain round or fluted circle cutter for the umbrella.
On the underside of the cookie, use your cookie stick
and make an indention that will hold the stick later. (see photo below)
Add additional cookie dough to the top of the cookie
to form a "cone shape" like a real umbrella.
Once baked and cooled,
turn the cookie upside down (see the indented hole for the stick?)
and outline and flood the underside.
I chose white glaze for the underside, but you can use whatever color you'd like.
Allow cookie to dry for a several hours.
Turn cookie right side up and outline and flood it.
You can do a pattern, or just make it one solid color.
Allow it to dry overnight.
For set up, add some glaze to the end of the stick and
"glue" it into the umbrella top.