In keeping with Mexican tradition, these types of tats often represent Gods as well as the strengths which they represent.
The belief is that everyone is made with a God in them that their personality and behavior are based on and this inspires many Mexican tattoos designs.
One of the most recognized patterns used in Mexican tattoos is definitely the Mexican skull tattoo.
As it is an unisex creation it can be incorporated into almost any layout.
There are many other themes used in Mexican tattoo layouts as they look extremely appealing in blended creative layouts.
You can pick Gothic styles similar to the tree tattoos, or perhaps wildlife such as the bald eagle.
An original flame pattern mixed with a skull design can look amazing if done properly.
The styles are not as nice if tattooed in smaller areas so I would recommend the upper back, shoulder or arm if you would like to get Mexican skull tats.