I use VDH soap,too.I like it.Its cheap and i can get it local.I always swirl up my lather,go strop my razor while the lather "settles down" then give it a few good swirls before each application to me face.
To cure razor skip i did two things:
1-Shave Secret oil.My razor just starts and glides soooo smooth with this stuff
2-I finally learned the true meaning of no blade pressure.It made a HUGE difference for me
Also,i noticed in your pic that your cup has no soap in it.I leave my cake of soap in my cup at all times.Am i not supposed to do this?Or is this something that may help you lather better?I dont know.Hopefully someone with more than my 2 months of experience can sort me out....please?!?!