Ply your trade
Definition 1 of 1
Pro Tip 1/3Professional Activity
Refers to your job or main activity, usually involving expert skills or professionalism. 
After years of training, she now plies her trade as an architect.
Pro Tip 2/3Location Specific
Can suggest the person moved or traveled to a specific place to work or offer services. 
The chef went abroad to ply his trade in a renowned restaurant.
Pro Tip 3/3Active Practice
Implies actively engaging in work rather than holding a title; doing rather than being. 
She didn't just study music; she plies her trade in jazz clubs every weekend.