I know I said You have to use vector but you can also use bitmap or other drawing tools! When you are done with your entry add it to the studio called just this logo design contest or simply remix my project when creating your own and I will add yours to the studio. here is a link to the studio https://scratch.mit.edu/studios/26508519/
here is a link to the studio https://scratch.mit.edu/studios/26508519/