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You are only allowed to submit work in JPG or PNG formats. File size has to be less than 500 KB with a width of less than 750 px and a height of less than 600 px. No clipart (must be original work of art) or watermarks are allowed and the image must be centered. (Horizontally and vertically with sufficient spacing around it).
For every category of design, you can only submit that specific category of design. Meaning that for a logo design, you can only submit logo design but not more than that. You can’t submit packaging and stationery designs in a logo design contest. Submitting different kind of category design will result in your designs being deleted.