Dont mean to be annoying, but when resizing sprites (in this case Tails and Knuckles) its best to do it in multiples of 100 (as in 100%, 200% etc) and keep the horizontal the same as the vertical (presuming your using MS paint)
I made the same mistake too when I started
Resi4ever at 4:48PM, Feb. 14, 2009
Dont mean to be annoying, but when resizing sprites (in this case Tails and Knuckles) its best to do it in multiples of 100 (as in 100%, 200% etc) and keep the horizontal the same as the vertical (presuming your using MS paint) I made the same mistake too when I started