Grimrock

OK, so Ive tried out creating my own using Media player classic for grabbing the pics i want, Paint for resizing then and an online tool for turning them to the right format, but for some reason they are still not being recognized by the game. I wanna know what I'm doing wrong, they aren't EXACTLY 128 x 128 but i figured the game would just fill the blank space with black or something.

ok n/m, lesson learned, i found a program that gives me better indicators of 128x128 sizing, so im ok it worked, ill be posting my finished product in the creative corner soon lol.