Rounded Off 
Avon lady, e.g.? BRIT
Pitch man? TUNER
Shady group? ELMS
Element element ATOM
Copious AMPLE [copious means "a lot"; ample means "enough"]
Arms treaty NTEST [I think this is a crossword coinage only]
With two exceptions, good cluing thoughout
RATING:
Three grins = Loved it; Two grins = Enjoyed it; One grin = A bit bland for my taste; One teardrop = No fun
