Ok, I re-melted the first heart and the second one came out perfect! I did heat up the mold before pouring the wax, so I don't know if that is what fixed the problem or not. Thanks for all the advice I was given. I also added some more dye to this second one, as I wanted a darker color. I know you can't see much of the detail with this photo, but I do love the effect of this wax.