Practice in Underpainting

I've been dabbling with paint for almost a year now. I just learned of this thing called underpainting. I learned of it in a Life Book lesson by Jane DesRosier. I love her work so much. So, I had to try this out (even though I didn't do my Life Book lesson yet) I almost like the underpainting better than the end product. I'm still practicing a lot with getting the skin to blend and have depth. It's eluding me at the moment.