Print out the template of choice.
Color the pieces (as appropriate) and cut them out.
You don't need to cut out template 1
You can leave it as a sheet of paper and glue all the armor pieces to it.
Assemble the paper craft. If you use the order below, things will overlap properly.
It isn't the end of the world if you do it in a different order:

Breastplate of righteousness
Belt of Truth
Sword of the Spirit
Shield of Faith
Shoes of the Gospel (readiness)
Helmet of Salvation