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Air layering is a technique of rooting a portion of a plant while it is still attached to the mother plant or cultivar. It is accomplished on tender plant tissue and will create a genetic duplicate of the cultivar.
Trim off any leaves and or branches in the area you wish to produce roots, around 1" on a branch this size.
The trimmed branch, ready for scraping.
I didn't have any gel rooting hormone, so I mixed some liquid with some powder I had available...no fundamentals violated, and it should cling to the branch better than either one used separately.
Cut a piece of clear plastic an inch to an inch and a half longer than the 1" area to be scraped. The size of the plastic is determined by how much extra will be need to secure it with twisty ties later in the procedure.
Next, we cut two small blocks of floral foam or rooty cubes or anything for that matter that will hold moisture for an extended period of time. In my previous life..LOL...we used sphagnum moss, which I tried to procure but would have had to buy ten pounds, the only size available at wally world, and my local friendly grow store had none. After the foam blocks are cut to a manageable size, place them in water and saturate.
Note the extra plastic to allow it to be secured to the stem later.
I like the rest of the procedure to happen quite fluidly and quickly, I will have plant tissue in open air that will normally never be like this naturally. We now scrape the entire circumference of the stem, removing the cambium or outer layer in our one inch area we expect to produce roots.
Now we apply the rooting compound to the area we scraped, don't be afraid of applying too much.
Place the saturated foam pieces opposite each other creating a sandwich effect with the stem situated between the foam and compress gently so the blocks conform to the stem, again covering the one inch area we scraped previously.
Wrap the clear plastic around the saturated foam blocks and the stem, leaving equal lengths of extra plastic at each end of the layer.
Secure both ends of the later with twistie ties, creating a miniature greenhouse to preserve moisture.
Voila! Air layering cannabis to create a clone.
We used the clear plastic to aid in monitoring moisture and determining when the layer is sufficiently rooted to be planted in any suitable medium. If, and most likely when we see no moisture inside the plastic we will remove the upper twistie tie and add water through the top, then apply the twistie tie again to the layer. I'll continue to monitor this layer on my journal and we can discuss any portion of the procedure at any time. LOL...look at the fat ass seedling in the background....the stem is bigger than a fat kindergarten pencil!
Great air layering session, learned alot gonna want to try that. So will be watch'n your progress . Thanks again. 
+reps on the air layering tutorial. Good S$#T!.