Please help me to get started!
1a) For bouts of self-indulgence, say, I enter violent sport (3,5)
1d) Horsey type at home for a time in 28* (6)
18d) Drink on ship, consuming one litre, revealing cunning (8)_
*28 Across is Match would be acceptable after a day (6)
Apology for not having any letters.