I need to put a quick picture I made in MS Paint into UMG. I assume you would put in Image. Bu I don’t know how to do that. Will it accept a MS Paint image?
You will import this PNG as a texture and then you can put it on your UMG widget with the “image” widget 
Alright, I made a texture out of the image, but I don’t know how to put the texture on the image widget.
With your Image selected in the widget, click the triangle next to Brush under Appearance, the second box in the Details panel on the right.