It'd also need to state Babylon 5 Contest or babylon5contest somewhere.
No deadline, can submit as many as you want (although only 1 can be used so you might want to stick to a design which can be adapted for generic use). You can use whatever colours you like, I'll change the comm's colours to fit the banner. You could also make a matching icon, we've more icon slots now, so I can alternate.
Lots of love