My P. primuliflora seems to be dying, so I took all of the leaves off (well, they more like fell off...) and put them bottom-down in sphagnum peat inside a closed plastic bag. I have them near a windowsill so they get a little sun, but not so much that it dries out the medium. I have the bag somewhat squished, so a lot of the extra air is removed. Am I doing this right? Anyone that has done leaf cuttings before, can I get some instructions or tips?