As ever, I've got the answers (I think!), but I'm not sure how!!
10A "Gents try moving close to front for quick glance" (4-3)
Ans. LOOK-SEE. I only get the 'quick glance' bit.
28A "Compiler is permitted to collect German pictures" (7)
Ans. IMAGERY. 'Permitted' is AY?
1D "Star under discussion pens good suggestive enquiry" (7, 8)
Ans. LEADING QUESTION. A leading question in a suggestive enquiry, but what does the rest mean?
8D "Egghead using ground to store energy" (6)
Ans. GENIUS. I only understand the 'egghead' bit.
21D "Depressed and cold working with bible in church" (7)
Ans. CONCAVE. 'Concave' is 'depressed' and 'bible in church' is 'av' inside 'ce', but where how does 'con' mean 'cold'?