I got you all beat in the shorty coach department. 4'10" and probably shrinking as I get older. Ha ha...
Still we do a lot of progressions. Here are two of my favorites...
YouTube - gymnastics - introducing "flyaway"
YouTube - gymnastics - introducing "flyaway" dismount
We also do a lot of "pitch" drills, but not on the "Wall of Death" set up. We are lucky to have a pit, so we start there with just tap swings that let go and land on their back in the pit. That's all the pitch is. I find it really helps to learn that basic let go, so you don't have the fear of what happens when you let go of the bar and us coaches aren't physically pulling them off. Small people just can't hold a girl above their own head and use their strength to get them to let go for the first time. I start this with experienced Level 3's and new Level 4's. You can pitch into a Level 4 vault resi pit too.
For our wall of death set up, we use a high beam and lean a "skid" we made out of 2 X 4's for the mat to lean against. We protect the beam covering from the wood with a chunk of carpet or a very old junk mat that isn't even as protective as a panel mat anymore. If you want a pic PM me and I'll take one and send it.
Anyhow, I also prefer to introduce on low bar, with it set all the way up, as long as they can bend their knees to swing through. Some of the much bigger girls we double spot, but usually I don't need the extra help.
I have had gymnasts on the low bar tap (even with bent knees) to candlestick that rests on my good side shoulder and I have them by the waist, and then they use my shoulder as the pivot point to roll or flip over to understand where to let go. I am facing sideways to them to start and time their taps, as they reach the top of their tap I step a bit under them and just a bit turned away from the bar to position myself. This allows a firm grip and they can roll over much more slowly than if I was only using my arms to spot.
I will warn this, I was a Level 10 gymnast that really understands the timing of this particular skill, it is not a technique for the beginner spotter to use. I've adapted techniques to my size, however while I am a confident spotter, it is hard to gain the trust of some of the taller gymnasts that I have. Just today I was spotting tsuks into the pit, and while it's fun in the gym, to take spotting blocks to a meet is frustrating at best. So for the most part we have skills well down in practice before we compete them, although my co-team coach has almost 8 inches on me so she usually spots at meets.
RickMcCharles has some good stuff posted on YouTube and he used to post around here I thought. Or maybe it was a friend of his.
Hope that helps!