Hi cantdoit & welcome to AB!
It's always best to post the full clues, numbers of letters & any you've placed, so that people without the puzzle can more readily help you - the following links should be useful :-))
http://www.theanswerb...r-crossword-question/
http://www.theanswerb...d-puzzles-guidelines/
Also, beginning your own thread is preferable - it's more likely to be seen on the front page :-)
That said (with apologies to others for not typing all the clues out!) -
10a Marque-try
12a Well
4d Dumb-o
7d Gathered - anag 'get heard'
20d Angler - 'angle' (corner) + (close to 'boxe)r'