When putting on eye make-up, always use your ring finger. I read this in a magazine sometime, somewhere.
It seems the ring finger has the least amount of strength, even less than your little "pinkie".
When working around you eyes, you don't want to apply too much pressure and break down the tissue/muscles? I started using this tip after reading the article. It didn't take long to make it a habit.
I cannot honestly tell you if this is helping the tissue around my eyes stay firm...I am not taking any chances! Now to find out what to do about the circles :)