I have accidentally ended up with the right hand darker/brighter than the left hand, though the same three shades were used. I just didn't quite get the gradient right on the second hand. More practice needed I think. They do look a bit like separate designs. I like the left hand best as the gradient is better, but I think I prefer the brightness of the right hand.
Colours Used: Alpine Snow - OPI, Blue Moon - Barry M, Bruton Place - Nails Inc, Cyan - Barry M, White Knight - Mo You