As I am interested in typography I could not resist to reply to raph's challenge with his lebe-Font.
From some sheets I have seen the most likely letters missing on your specimen sheet are: J, U, w and maybe K.
However, these letters look great in your font. You certainly did a good job. The only letter I think does not match fully is the U, which should IMHO have a more circular arch (not sure about the english terminology) and be a little bit less slanted.
And maybe the stem pointing to the upper right of the K should be more uniform - most of the other letters have quite uniform stems.
Anyway: I like your font very much.