singlewhitemale,
Use the finest tip you can possible. Make sure you have good ventilation so you're not breathing stupid fumes for an hour. I'd advise you to do the outline of your borders first then go with a random pattern starting and stopping at different areas until you have it all filled in. I highly recommend stippling to anyone with practice you can get pretty darn good at it. I've now done many guns, knives, etc all for the hefty cost of an $8 soldering iron and some sweat. It's a great skill to have.
Here's what I mean about doing the outline first the filling in random:
This is a Glock19 Gen 3 that I was doing. You want to get the lines clean, notice how fine the dots are (you want to use a very fine tip for your iron):
Start Filling the grip in more and more using quick taps of the iron (you should just see a puff of smoke):
By using this technique and going from multiple angles you get a more natural looking stipple job since you didn't try for a specific patter or line:
Go slow and have some fun!!!! Heck I love doing stuff myself. I've been pricing out cerakote stuff recently but think I'll leave that to the pros.