Practice to draw models using the notations of your choice. Get used to draw visualisations of important concepts in your domain in an effective and quick way.
Learn important Modeling Notations like UML or BPMN. Get firm in a subset of these notations. Practice to draw models in these notations Ad Hoc on whiteboards and flipcharts.
Communicate these ideas using the visualizations as a communication anchor. Moderate meetings and enble others to communicate and share concepts with models.