Help with black outline

[Megs123]

Ok. I'm new to GIMP and not very photo-editing savvy.

I have an image with a transparent background, and a bunch of white and red text and some linework. 

I need to put a black outline around it as I need it to be on a background that is half white and black. 

I've tried to follow the tutorial video's I've found on YouTube but have somehow ended up just blacking out the entire image. 

Can anyone help?

[Blighty]

(10-30-2017, 06:48 PM)Megs123 Wrote: I need to put a black outline around it

Try this:
Filters > Decor > Add Border