How would your results have been affected if?
a) each of the flasks you used for the standardization of naoh had initially turned pink with the addition of phenolphthalein, but the color disappeared when you added khp to each? (and you did not rinse the flasks and start over)
b) there was still visible, undissolved khp in the bottom of each flask when you finished with your titration?
c) you stopped the titration immediately after the solution first became pink (the color disappeared almost immediately)?