Rescale and reupload it please, this can be done with the edit button in your gallery.

Neat! Welcome to PJ! :)

Please note that the images you upload to your gallery shouldn't be pre-zoomed, the plus and minus buttons below the image are for zooming in and out. Your art pieces won't be approved by the moderators until you fix that. If you click the pencil icon below each of your posted pieces, you can edit each one and replace the main image with one that isn't pre-zoomed.