I’m relatively new to the pistol shooting world and I had some trouble getting a proper grip on my SW MP 9. I used a suggestion by Chris Costa from the Magpul Dynamics Art of the Dynamic Handgun dvd and put some Black Magic grip tape on the gun.
I put some tape on the left and right hand side of the grip and a piece underneath the trigger guard. This really helped me get a proper grip on the gun and made it fell more secure in my hand. After adding the tape I went to the range and refined the placement of the tape and I’m currently using the grip tape placement below.
The grip tape was an inexpensive way to improve the feel of the handgun. I looked into stippling but I was not comfortable with modifying the handgun in that way. Here is a great link on how to stipple a firearm using a soldering iron.