4 D. An unusual word meeaning 'swing higher'. There's a species of Javanes tree which loses 'accepted', followed by a very common word for 'technique'.
You haven't given any information on what letters you have (nor indeed the clues), so it's hard to work out how much of a 'nudge' is needed.
6d def is sporting slang for 'thrash' - ??(O) ???(L) is the 2 word shape for 'excessively thoroughly' (then remove both ends).
14a is an obscure word - the usual 3 letters for 'was first' inside 3 letters for 'modern' [all reversed] def is a skiing term.
Thanks for your help but still struggling with 5d as expected a Scottish footballer and an O from what I hope is the correct ans to 10a( my skipper was a 'roo !!)