Walk across street, supporting deliveries on cycle, perhaps? (10)

'walk across street supporting deliveries on cycle perhaps?' is the definition.
I can't tell whether this defines the answer.

'street supporting deliveries on cycle perhaps?' is the wordplay.
'street' becomes 'st' (abbreviation).
'supporting' says to put letters next to each other (in a down clue, some letters go below others).
'deliveries' becomes 'over' (a cricket over consists of six deliveries).
'on' is a charade indicator (letters next to each other).
'cycle perhaps?' becomes 'ride' (cycling is a kind of riding).
'st' put after 'over' is 'overst'.
'overst'+'ride'='OVERSTRIDE'

Can you help me to learn more?