freeball
extemporize
extemporise
rush in
muddle
wing it
shadowbox
walk in straight lines
wing
put by
fly by the seat of one's pants
mime
run around like a chicken with its head cut off
autoschediaze
scramble
think little of
take the studs
botch
improvisate
leeroy
put a gun to someone's head
unimagine
go rogue
have another think coming
hurry
follow
abide by
comply
Nance
roadmap
back off
play around
cut out the middleman
stand tall
forget about
run riot
antic
act out
rise above
skulk
play one's cards right
dream up
piffle
throw in at the deep end
weasel
paint oneself into a corner
play at
box oneself into a corner
duck out
huck