I recommand restarting your server at this point. If you are able to reconnect, your bridge is working.

This is a little ambigous (which server?). I recommend rewritting this in the form:

I recommand restarting your foobar server at this point, by typing:

/etc/init.d/foobard restart 

If you are able to reconnect, your bridge is working.

Again I find "(make sure to insert your public IP Address)" ambiguous for people behind a NAT. Would the following be better?

To find your Address and Netmask type type

ifconfig eth0

To find your gateway type

route

You say "Also edit /etc/qemu-ifup like this:". However some machines do not have this file. Perhaps we should have a line

(create this file if it does not exist)

or, perhaps instead:

if this file does not exist, type:

apt-get install qemu