Rhyming Halloween Party/ Costume Contest Invite

I made up a rhyming evite for my upcoming Halloween party and I wanted to add a rhyming section as well to let everyone know that it will also be a costume contest. Does anyone have any ideas on how to incorporate that into this?:

Greetings Gouls, Ghosts, Vampires, and other creatures of the night,

Halloween is coming soon so grab your mask or your broom!
Joe & Jared will be your host
Come dressed as yourself, or a ghost!

There will be food, drink, and witches brew....
Now all we need is you
At our
Halloween Spooktacular Party!!!

Saturday, October 25th
7:00p.m. Until your blood runs cold
Or your corpse start getting covered with mold