Hiding the background picture is to click the left eye on the background layer. So I can't see the background.
I don't know how you make the watermark. Let me tell you my method.
1. Create a new file with a custom size.
2. Create a new transparent layer. Write the words you want.
3. Click the eyes on the background layer. So you can't see the white background.
4. Edit = = = Define mode = = Enter a name = = = Click OK.
It's over.
Then you open the image you want to watermark and create a new transparent layer. Click the paint bucket tool, and next to the paint bucket icon in the upper left corner, change "foreground" to "pattern" (just click the tick next to the foreground. ) Then, next to the "pattern", you can choose the pattern. You can choose the one you just made and fill it in. Then adjust the transparency as needed or something.