Teaching to Square Up

I was wondering how to start teaching a horse to square up.
Like the best method?? If you guys could help that would be awesome.

http://www.raraequus.com/articles/ho...are_halter.htm

Thank you for the question and answer-i just stupidly asked the same question in Drafts-next step- how to get that nice neck line in halter???? When I stand in front he always steps towords me.

Kirsti, if you try to hold him back a bit as you move forward that should help.