[Flow] Best practice: How to organise packages within a flow application

[Qbus | Axel Wüstemann]

Hello,

what might be a best practice to organise an application in flow? If I 
have several application components, each of them might consists of 
modules and plugins etc.

Is it good practise to build each applicaion item as a separate flow 
package? How I can access central ressources of the application from a 
component package like layout templates, theme files etc.?

Thank you for any hints.

Axel