Ok I need to request friendships so I will do that .. I believe MMD is the major 21st century art form :)
It ultimately depends on the creator. It generally never hurts to do a friend request, you'd be surprised how many people are really nice and will accept regardless if you've made a video or not. It's not as rare as you think. Other creators are strict though, and for good reason. Always check their profile page and see if they have requirements for sending friend requests (they'll ignore it otherwise), some want you to have a video uploaded (generally to show that you are a creator rather than someone who steals works to reupload somewhere else), others simply want a quick PM to show you genuinely care and want to see their work. Good luck.
Thanx for the reply .. I edited the message before I saw there was a reply, cheers.