Flight crew is responsible for the condition of the aircraft and make their own inspections - often a more lengthy one before the first flight of the day.
The aircraft is checked for existence, secure attachment and condition of many items (such as pitot/static tubes,control surfaces and antennas) , fluid leaks and tell-tale curling paint, access panels/service doors position and also look for obvious damage to the airframe, engines and landing gear. With a three person crew, this was often accomplished by the 2nd officer or Flight Engineer.
Ground can assist by reporting when they see something out of kilter.
Here's to your getting it right.
