My mistake with both my hugelbeds was to not put enough soil on top. The one started last year is finally able to grow a nice crop of peas, so will improve as I finesse it.
The second one I'm still tweaking. Again, I don't think there was enough soil and it may have also been a bit steep sided.
I have photos posted on one of the other threads of the beginnings.
There are ones from this year on my camera and I'll post them as soon as I can get around to it.
My next attempt will be better and the next, better still.