I like it. A few minor suggestions:
these things above [replace by something more specific] are not super hard.
Your contest can attract thousands of the right people. And you and your boss
can be will be happy.
Take your time to find a theme that
really fits your audience. Once done, talk about it in a very few words [not sure what you mean with this?], and make it a no brainer to enter your contest.
Make it simple.
It will be Make it a success.
[adding a white line & repeating “make it” adds extra stress to your last sentences]
Enchant readers. Woo customers. Win business.