I've tried to theme it using various codes, including one by the theme maker, but with no real success! Not overly picky about how the tags appear, though being at the bottom of the post in some fashion would be preferable. Any and all help is appreciated!
Cut all of line 640 (from the "full code" link you provided) and paste it after line 632, or anywhere before
If you examine the surrounding code, you can see
If you move all of line 640 into
Tumblr's documentation covers all of this, if you're really interested. I hope I've been helpful to you :)