This pattern is worked flat like a knitted baby bootie and then stitched together afterward. The pdf includes the pattern for the heart which is on one set of the booties. Along with pictures of how to sew it up.

Materials:
baby weight yarn (3)
less than 1 skein of yarn needed for both booties
hook size 4.0MM
Yarn Needle is very important! As it is used to stitch the bootie together after you have crocheted the entire piece. and also to connect the heart to the bootie.