Photoshop :: Tween Movement With Puppet Warp

First of all, Photoshop is only available at my school for the time being, so I can't provide screenshots. I'll try to explain properlly though. Basically, I'm just looking into having a man bend down to talk to someone for an animation, and to provide frames in between. I already have the timeline up, and I know how to use the puppet warp. I want to automatically have new frames created in the timeline in between the ones of the man standing and bending. These are my attempts of what I tried to do.
 
I duplicated the layer of the man. One of the man standing, and one bending down. In the timeline view, I opened up my layers and clicked the stop watch under the "Position" option of both layers. I don't recall what happened, but this attempt didn't work.With the two layers, I tried editing in the stop frame view. I clicked the two frames of both layers, and clicked "Tween" below. I then chose how many frames I want to have be created in between, and the result gave me frames of an opacity difference. In other words, it was fading from the man standing to bending.I had a single layer that I was planning to work with this time in the stop frame view. When I used the Puppet Warp for frame 2, I think I recall it was working fine. But when I tried tweening the two frames, I ran into another opacity problem, and I think I recall the first frame changing into the warped frame. 

So is there a way to tween motion in Photoshop?