I would like to get some advice from experienced users (professionals or regulars) in PCB Design flow, especially in complex PCB boards.
I already made PCBs, following the "basic" design flow as shown in this picture :
But now I'm starting to make larger PCBs which are more complex, and I have some questions in the PCB Design step (red rectangle of the previous picture), especially in the "Trace Routing".
For example, I draw the schematics of a complex board and do the simulations, then I design the Layout to finally have something like this :
And I wonder to know the "Correct Flow" to design the layout correctly :
After placing the components, should I start with routing the "signals nets", and then routing the "Power nets VCC_5V, VCC_3.3V, ...", and finally do a ground plane with all GNDs ?
Or is it necessary to route all the nets at the same time, hoping having something correct ?
Thanks for your help !