As someone who's also new to the Newgrounds community...kinda*. This sort of stuff is good to know about. For me I've been desperately trying to get attention on Twitter, but like you've mentioned: it's freaking impossible when you're just starting-out. I've been posting art on twitter everyday since February, and even that's not enough.
*(I always knew about the website when I was younger, but I thought it died-out with Flash when I was older)
Now I don't have plans for any sort of contests, but I'm glad to hear that I can just ask the community and even Tom Fulp for advice and whatnot to get it going smoothly.
As for the Streamers guy (sorry, forgot his name). I have one bit of advice: don't just call your project "Streamers" 'cause that's going to be a Google search nightmare. Though, you've also accidentally solved that problem with your Patreon name: "Streamers' Universe". Changing your project name to that will make it much easier to search for 'cause it's more specific.