Hi firstdefence, what I was really hoping for was an explanation on how to do a miter cut, even if it did not work with this particular design. Thank you thought, for your suggestion re: some other object in the corner as opposed to mitering. I may use that idea on another project :-)
JimmyJack, your design is what I was hoping to do. (I realize my red triangles were not perfect, but only there to assist with providing clarity for what I was hoping to achieve).
The thing is, as I stated in my first posting, I am very new, and was hoping for clear, direct instructions on how to do the miter cut, which I was also hoping would allow me to transfer that knowledge to other types of cuts. The only tool that I found to remove material was the Selection Brush Tool in Pixel Persona, but that tool does not allow for the creation of clean lines. Would you mind very much providing step-by-step instructions on how you achieved the miter cut? I really appreciate you taking the time to assist me!!
Cheers!