We will be launching a new affiliate program over the next month and so making quality videos should allow participants to more than earn their time back in terms of effort in making a video.
You will be, yes that sounds great for the future and we'll cross that bridge when we get there.
But do you actually expect professional people to take out time to invest in your tutorial video ? Time that they can perhaps spend creating a template to sell on an online marketplace which could earn them much more than what you are offering as a prize.
Contests are never fair for professionals and hence most pros avoid it, its good for people who are just starting out and have no client base.
A prize that they might not even win
This isnt badgering, just spreading awareness.