While sketches are good for designing concepts and getting the feel of pieces, if you want real critism for the form of your vreation (not just the drawing itself) you should draw it again on clean paper with good contrast. It's hard to distinguish the parts. The information is nice; the information that you said is "useless" is far from it. With large projects, this information can make the difference between pass and fail. Keep drawing!
You want some? 'Cause you're looking at it like you want some.