I think you are talking about making contributions to existing memes rather than completely new ones. That’s what you do when you post on Memebase
Either way, the most you can do is try posting content you make in different places (EG: reblogging on Tumblr) but there’s no guaranteeing that the internet will accept it just because you make it more apparent.
The only way for something to become a meme is to spread far and wide across the net and become somewhat of a common knowledge aspect. Doing this requires the rest of the internet to help you spread things around and you have no control over that at all.
If you just try and spread your own creations around yourself and hope it catches on, people will call that “meme forcing”. Something that is considered a severe internet crime and people will utterly, mercilessly destroy you for your insolence.
Either people like it and spread it for you, or it goes nowhere.
My advice is to not worry about spread or recognition and just create something really original and clever. If the internet judges it to be worthy of being a meme, then it will take it the rest of the way for you (You will not be thanked for it). If not, then that’s final
Oh wait, you are only talking about Memebase stuff.
Well in that case just build up a reputation with the Memebase community and maybe you will be noticed more. Talk to people, make some friends etc etc