First of all thank you for the help, !
Here is my Landscapes paint mode:
I don’t seem to have any + sign on the right and when I move my cursor onto the map the brush is stuck in a stationary position and I can’t move it around.
This may be for the tutorial section of the forum, but I am not sure how to create a landscape layer blend in my material. I have selected the “Used with Landscape” option within my material but it doesn’t seem to have made a difference.