Yes, you legally can draft a POA yourself--there is no need for an attorney to do this.  However, there is certain language which must be included, which makes having an attorney hightly beneficial, to make sure you don't omit critical language (otherwise, you'll have to look it up yourself). Also, it must be signed in front of two witnesses, neither of whom can be the agent (the person given power by the POA), and both of whom must sign it, too.