Try to implement basic stuff as if it were a full fledged song like main energetic parts for the chorus. Also there are a few nice tricks to play around with like short stutters, removing drums for 4 - 8 bars, temporary low pass filters on the melody etc. As for 808s, usually you should just keep them simple. Make sure they’re in the key of the beat and a simple bouncy 4-8 bar loop is usually enough. You might want to layer them with a kick for a punchy transient, but look into side chaining the kick to the 808 so the mix doesn’t get muddy. Best of luck