I've traced out the heart twice and the soul once. Both are challenging nebulae for visual observers. Here are some of my meager notes on some aspects of the heart nebula:
IC 1795 = NGC 896: "Easy and bright knot, kinda reminiscent of a galaxy, embedded in a nebulous background."
IC 1805: "A cluster embedded in a filamentous, nebulous background."
The most prominent structure I picked up in the heart nebula was the junction of the right atrium and right ventricle, which I described as resembling a "bird with open wings".