Thanks, particle. My Makers stamp is from Infinity Stamps. Their website is www.InfinityStamps.com. Real good people.
I'm no expert by any stretch, but the tools I use on the trigger guard are the same ones I use for the other detailing/boning. Some of 'em are a little weird...maybe a lot weird. On the trigger guard I'll start with my thumbs--whether I've used the press or not. I also use the wooden handles (round ends) of a couple of edgers I have, to get things started. I use an edge slick from Jeremiah Watt to sharpen my lines in the trigger guard. Here's a link to the tool JW Edge Slick. It's an edge slick, but I've never used it for that. Beyond that, I use an old butter knife (Mark Garrity gave me that idea), a crochet hook, the butt-end of a Sharpie marker, and a couple of big pear shaders. Real fancy tools.
Hope that helps.