I've created a watermark and it's in the brush tool area. The problem is when I make a new layer, click on brush, my watermark is there and I can hover it over the picture but it won't stay or paste to the picture. What am I missing?
Did you click on the picture with that brush? Check your painting color, brush blending mode and opacity.
Check this tutorial if you are missing on something.
Create a New Layer (Control-Shift-N) and stamp the watermark on your image on a separate layer. See the process here - How to Add a Watermark to an Image in Photoshop | Photography Mad
Could you inbox me your main image?