Sounds like time for a band meeting, it also might help to get together, rehearse the song, work out the kinks, see if any changes need to be made, remember everybody's a critic, band's need to make group decisions, it's hard at times but just as much energy that goes into the music has to go into the band's relationship with each other, most of the time the music is the easy part. Are you usaully the person that brings in new music to the band? If so, get used to this situation, because it's going to repeat over and over, better work on the people skills, you're going to need them...