When doing your signature click the picture of the mountains and the sun then copy the image url then paste it in the text box
1. Go into google images (or any browser/website of your choose) 2. Right click the image you want and and select "Copy Image URL." 3. Then return to the forums, signature edit screen. 4. After that click the icon on the tool bar (above the chat box) next to the emoji tab. 5. Paste the URL in the given box. Note: If you want your image to be placed in a specific spot, be sure to place your curser where you'd want it. Hope I could be of service!