As far as electronic music is concerned, the study of timbre is a top priority. Electronic producers and composers are as concerned with the way something sounds as they are with the notes and rhythms its playing. Acoustic composers can learn much from the study of electronic music and timbres, even if electronic music isn’t their most preferred genre.
Look over your piece and decide if any of the parts need effects. Balance your wet and dry sounds so that every sound contributes to the overall feel of your piece.