3a, Newspaper's big bedroom feature coverage? (10)
10a, Appearance of mental condition I will take on (10)
5d, More voluminous? (9)
6d, It may reveal a change of heart (11)
No problem - if I don't win, then it would be nice if an ABer did - and to trip over a spelling mistake would be a shame....though your "a" may have been a typo, rsvp! I have a fault (or used to) in leaving the silent "n" out of government and environment