I had the corner tip of my left middle finger cut off when i was a child. This has made the tip more flat and it is making playing more frustrating. I have to push harder but this only spreads the pad of my finger tip out more and i get dull strings above and below the fretted string. Aslo my nail grows past the tip so i have to keep it filed down in order to play
Here is a pic of the tip. Please excuse the quality as it was taken on my phone due to my digi camera being stolen