Yes, Just email it to us or upload it on the order page. If there is a colour or graded background then please add 5mm bleed all around the image.
DO NOT put a circle around the artwork to show a representation of a badge UNLESS you want us to print it. Any uploaded design will treated as artwork ready for print. If you want to show us a representation then that is OK provided you send us both the artwork for us and the visual representation of how you would like it to appear.