I noticed you posted this on the forum. Is it done, or is it not? By posting it both in the WIP forum and here, you're sending a mixed message. If it's not done, it shouldn't be in the main gallery yet, and if it's done, it shouldn't be in the WIP forum.
By the way, your preview image is NPA (non pixel art). If your work doesn't fit in 100x100, it's better to crop than resize, so that the preview is also pixel art. An NPA preview might keep your work from being accepted.
Both the preview and the detail img are the same sprite. The sprite is 128x128 at 72 res. The only difference between the small and detail view is the canvas size.
The sprite is done but I posted in the WIP for critiques.