i'm very interested with the whole concept of propagation so i thought I would try with my echeveria.
Can anyone tell me if this is considered a "clean cut"
That's fine although it would have been even better just to snap off the leaf at the natural breaking point. Echeverias are a cinch, like most succulents. Just make sure you follow instructions for succulents and not for shrubs or perennials. Don't over moisten, don't over think and don't love it to death ;-)
Here is a link that might be useful: Echeveria propagation.
This kind of plant is usually discussed on the very busy cactus/succulent forum, if you have more questions. That's a great link, Flora!