Well hey there!
Have you considered having a top three, instead of a winner for each category? It might make it less financially stressful that way, haha. Also, have you tried talking to Wing about being an Accredited Host/AGWC? I'm not sure on the specifics, but it would get you sponsored in the very least? I don't know, just some ideas to toss out!
For category two, you said that the person shouldn't be found, either alive or dead. However, can we
imply one or the other, or even have an epilogue of sorts regarding it? I have a very neat idea, but it doesn't really end on an questioning note.
Also, will you grade harsher for simpler comics? I'm like... stick-people level. xD Stories I can do, drawings not so much!