Whie I was looking at some do it Yourself Techniques on Pinterest, I found this to be quite Interesting:

 

Tip on clear image

 

Condition your stamps: If you aren’t happy with the quality of your stamped images, try going over the surface of your stamp with a large eraser in order to give your ink a little texture to grip to.

This is especially effective with larger stamps, and it
works on both clear and rubber varieties to give you crisper images.”