Hi and welcome to Knitting Help.
You are doing a three needle
bind off for the toe of the slipper. Instead of knitting the first 2sts (one from each needle) onto the right hand needle, try slipping them purlwise onto the right needle. Knit the next 2sts together and then pass the 2 slipped sts over the stitch at the end of the right needle and off the needle to bind those sts off. Continue to bind off at usual until you get to the last 2sts (one on each needle) and then follow one of these methods
to avoid a pointy final stitch. Method A should work fine here. Doing the end sts this way should avoid the pointy ends and give a more rounded look to the toe.
Good luck with the slippers.