I gather everything up and bury it in my front yard or take it to the crossroads with a payment.
Any omens would be personal. You might want to contemplate it for yourself and verify with other forms of divination or folklore. Keep a journal to list all the omens you personally perceive. It would be a nice way to start building up your divination method.
My personal interpretation:
It could mean that the flow of the spell was interrupted by other influences. A heart could be the need for love or the "heart" of the matter needs to be tended to (if the spell isn't for drawing love). The shoe could mean communication, physical work, or visiting someone. Maybe there is a need for communication or there isn't a foundation to build the spell upon which interrupted the flow.
Thanks for the response! I'm sorry if I wasn't clear, the wax that broke was left over wax from when a candle completely burned out. 2-3 days after, when I was moving it from my altar. Does that make a difference? The original wax looked like female genitals, then the wax broke off, and I got the heart and the shoe. Thanks again.
Eh, I might consider it less of a flow issue, but could still be a sign for the above to happen (the whole get to the "heart" of the problem or need for some footwork). I would think of interruptions more if you were still working the spell when it happened.