The truth is you're right. My problem was that I made it on a 1000 x 1000 canvas, and when I cut it to this size, I realized that the design was very small. xd
The preview for this is so small that it's hard to click D: Since your full image is smaller than 100x100, you don't actually need a separate preview image at all, you can just upload your full image as the preview and not have a full image.
Want to give some dough back to all those amazing pixel artists? Donations provide prize money for contests, help cover hosting costs and support new initiatives.
The truth is you're right. My problem was that I made it on a 1000 x 1000 canvas, and when I cut it to this size, I realized that the design was very small. xd