I have just started straight razor shaving and I have an antique Wade and Bucher blade that I've gotten really sharp. When I try to shave though, I don't seem to get any hair off. I use williams shave soap and a brush to put on the lather and I let it soak in for a couple minutes, strop the razor and reapply lather before I shave like I've read. I try to stretch the skin though I find it difficlt with the slippery rather. I just can't seem to shave any hair off when I try to shave. Any pointers on what I might be doing wrong?