MacBook Pro. This is the file name as it appears on the computer: IMG_6028crop.jpg, and when I drop it onto the TM Image site, it shows up as in my post above.
That image is 1465 x 1080 unfortunately, so will need to be downsized to be used as an avatar (the max is 100 x 100). You can do this using a free ap like Image Size, which is free.
