Help making text show up on screen.

So I need help making a text show up on the screen. For example…If you try opening up a door and a text shows up saying “the door is locked from the other side.” Now I got it to show up on the top right corner…But it’s small. Is there a set up to enlarge the text and place it in the middle of the screen? And I’m asking in here because in UDK it was done with kismet which is now BP.

I think you need to create a Widget Blueprint.

Try dis: UMG UI Designer Quick Start Guide | Unreal Engine Documentation