Am I able to showcase my work?

Am I able to showcase what I have made using UE4 on YouTube, Tumblr, Facebook, and other social media ok? By showcasing work, I mean just showing my actual game. For example, screenshots or videos of me playing the game. I’m not showing UE4, source code, or the actual editor. Just what I’ve done. Do I have to go through Epic for this? Here’s an actual example of what I would like to post

By all means, go for it! Definitely no permission needed.

Thank you!!