Roebeast has put up the rules for their Trash Bash 2013 modelling and painting competition over on their blog.
From the announcement:
Hi everyone. Rules are now online for Trash Bash 2013!
If you like to kit-bash or scratch-build check out this annual contest, now in its third year! We have some excellent sponsors and outstanding judges such as gaming legend Rick Priestley and Bryan Steele of Ravage Magazine.
The last couple of Trash Bashes have been a lot of fun and showcased the amazing talents of gamers and modelers all over the world. I’m sure this year will add even more inspirational builds and I can’t wait to see them.