Don't cut a leaf off, just let it be just as you have it. It will break through the stem that is in the soil and create new roots trust me! Even the one without leaves will root and throw a new stem.
In time you can leaf start after it grows many more leaves, but when it does grow it grows that long stem first, then the leaves on top...those three leaves ( I think there was 3 ) will continue to expand to a very large size, so they aren't even old enough to support a new rooting.
Here is my parent plant so that you can see the tenderness period yours is in.
1. there is a stem to the left, that is where yours was cut.
2. here is what the right side looks like, this is how your side would have ended up in a few months time, just on a longer stem (thus my decision to cut it)
3. to show you how the stem you have can grow roots, here is an example of air-roots already forming on the remaining stem (just below where I cut yours). Yours will do this too.
ok, and one more of the leaf side so you can see that your three leaves will expand and take in more water and grow much larger.
As you can see, your 3 leaves will grow additional leaves along the sides of them, this is what creates the fanning or fan-like palm effect. So a leaf will grow from a leaf but in a pattern.
Stay away from Pat's Epis site for a bit, just trust what you have done so far is perfect. If you do get a new sprout and it starts to throw a long stem like mine did you will have to increase the light, like move it outside, otherwise it will get all tender and leggy and make a mess...intense lighting will make it act more compact and more toughened up!
Ron
It is a tough plant! Except it hates freezes!