Don't worry about the absence of HIs (hypnagogic imagery) -- myself, and a few other on this forum it seems, don't have much (or any) during WILD.
We just "work" a bit differently than what the tutorials expect. Probably, the visual stage occur later than the "tactile" stage.
For example, like Day_dreamer, I have the "earthquake" sensation (my body "jumping" on every corner of the bed then falling through the floor) while still seeing or hearing nothing, but I can touch things (like grabbing my sheets while falling). Only after that, do the visual hallucinations (my dream bedroom, basically) appear (but blurry at the begining). Then I'm standing, and the lucid dream starts and I can control my actions.

Try to focus on those other hallucinations (arms and leg missing or feeling differents ? A "presence" in your room ? Just sound ? Smell, maybe ?) instead of the HI to "anchor" the WILD.
For example this night, while trying to WILD, I started by not feeling my arms anymore. I then decided to mentally move the "ghost" arms (but not moving the real one). A few seconds later, it was like two dogs had jumped on my bed and were running around me (they were dogs I had a few years ago, but not now). I could feel their presence, but still no vision or sound.
Then I carefully moved my dream arm (the rest of my body was still "real") to catch one of the dogs. I touched her, then could feel that she was licking my hand. Then gradually the vision of a (childhood) bedroom started to appeared, but very blurry.