I agree with Dave the thumb seems a tad short and to my eye the forefinger appears a tad to long.

The thumb when pressed against the hand should come to about halfway up the first joint of the fore finger. The fore finger is a bit long, it should be about half the distance of the tip of the middle finger joint. The third finger (the one next to the middle finger) should be a little longer then the fore finger and the pinky finger should come to the end of the second joint of the third finger.

These are the rough values I use.