appeal against sentence — attempting to possess a commercial quantity of border-controlled drug contrary to s 307.5(1) Commonwealth Criminal Code — state offence — original sentence imposed for federal offence 9 years’ imprisonment with 5 year non-parole period — total effective sentence 10 years’ imprisonment with 6 year non-parole period — age — s 16A(2)(m) — offender youthful — as seriousness of relevant criminal conduct increases, mitigating effects of youth decreases — where degree of criminality of offence requires deterrence, denunciation, just punishment and protection of community to assume prominence in sentencing equation, weight to be attached to youth reduced correspondingly — nature and circumstances of offence — s 16A(2)(a) — objective seriousness — offender held pivotal role in furthering enterprise to import cocaine for purposes of sale in Australia — given offender’s pivotal role, moral culpability is high — general deterrence and need for stern punishment must be given prominence in sentence imposed — total effective sentence within appropriate range — appeal dismissed