Well, to get away from the whole blocks on fingers then just don't use it anymore. Using hands for PK is just for show; supposedly using ones mind and visualizing the outcome is equally as effective in comparison to using ones hands and trying to mentally push an object through their hands.
well its not just for show even though there may not be a need for the hands the way our brains are wired (i dnt mean to soeak for everyone maybe its just me lol) its easyer to do pk when the hands are involved, even if my hands are behind my back using a slight fingure motion makes it much easyer to feel like you have control.