EDIT: The piece I found already had these two leaves and a root. I think it fell out of its original plant and then I found it. I put it in soil since it already had roots, about an inch big, and the next day AFTER planting- this is what the leaves looked like. Should I just leave it alone? Does it need more sun? Found a piece of a Lemon Lime Philodendron detached from main plant with a root at Home Depot. I took it home, put it in some soil to see if it would propagate, watered it, and now it has these brown spots and started slightly yellowing. Any suggestions?