This egg was created over a paper egg (purchased in a local craft store – which btw sometimes is not just paper but has a plastic core or inner support which might have to be removed). The texture for the heart was created with the lid of a pipette holder (from the stash of recycling in the hallway at work) and it worked quite well.
I can create eggs like this using your flower petals to make it a more meaningful object, a remembrance of someone or some event that you wish to keep in your heart.