I am in the process of developing a portfolio of some recent photos I took while in Southeast Asia. I want the portfolio to be as professional in appearance as possible.

Each image will be enlarged to 10.75 inches square. Allowing for 1/8 inch mat coverage on each side the final image display size will be 10.5 inches square.

Are their gallery or museum guidelines I should consider for matting a square image of this size?

Any recommnedations or thoughts on this matter are greatly appreciated