I was able to setup my i386 chroot with the help of the following two pages:
Ubuntu - Unofficial Transgaming Wiki:
Debian AMD64 How-To:
I used the Transgaming Wiki for most of the steps, and used the example in the Debian AMD64 How-To to translate some steps that I needed to understand for Debian.
NOTE: on Debian sid, I found that I needed to put my dchroot configurations in /etc/schroot/schroot.conf, (as opposed to /etc/dchroot.conf), or I would see the following error:
W: No chroots are defined in ‘/etc/schroot/schroot.conf’