...
\<node_template name>\ [per each node_template that has specific artifacts (artifacts that were added to the instance / customized for the instance or generated for the instance).
This folder should NOT include artifacts of the type of the instance (e.g. HEAT should be in the folder of the VF and not in the folder of the VF instance, HEAT_ENV will be in the folder of the instance)]
\Deployment\
\BPMN\ [Includes all workflow BPMN artifact files]
\Definitions\ [includes all TOSCA yaml files ]
...