Cardanic Gravity Gimball for action cam and all in one cam FPV for quadcopter

This is my idea for a cheap and light gimbal for every average quadricopter. I do not have much modeling experience so I created this model by merging existing pieces found in thinghiverse, probably there will be some correction to make. What I ask is just that if someone likes it and can accomplish it, send me the printed template.
The guiding principle is that for good video shooting the drone must make slow movements so with this system the cam with its weight should always be horizontal tha