is there a special lighting needed? i have them in my kitchen by a open shaded window , thanks

No, kitchen window should be enough. When they are big enough to be potted up, they should be slowly introduced to more and more light.

When propagating from leaves, each leaf should be removed carefully so you get part of the stem with the leaf. Without that portion, it won't grow. Normally if you twist off the leaves then this part comes too, for these succulent species.

If some leaves are clearly rotting or are mouldy, they should be removed.

Typically, I see roots and plantlets within 3 weeks or so. =)

These cuttings were taken a month ago:

Here they are now:

1) High Air Ventilation - They are placed near a window with a fan oscillating

2) Some Moisture, but leaves not directly touching them until roots are seen.

- I made a mistake at leaving them on top of a wet tray of turface/soil, but after drying them, the under surface wet soil does encourage humidity and roots growth. This is the result

3) Light - They received bright light, but fairly shaded. We get trees outside as shade, as my apartment is at a rather lower level, an exterior awning, with bug screen further filtering sunlight. They get max 1 hour of direct filtered sunset light.

Now I water them by submerging the tray for a couple of seconds (Tray has holes), and remove it. Note the top layer of soil is not wet, moisture will keep a roots alive, and they will naturally find their way downwards.

Mayo is right, getting healthy leaves cuttings are crucial. How you attain them, and how plump they are will affect propagating. You will need some portion of the meristem when plucking the leaves off, then you will see roots and sprouts.

Mine were obtained from a plant that had rotted roots, some leaves were already affected by the rot, and they didn't survive. I would like my success rate was about 70%. I had to toss about 8-10 leaves that just turns black and die.

Best of luck!

Bernard