Designing plays an important role in visual communications and with the basics of design in place one can easily achieve this objective. Even though there are many rules in designing, here are 5 of the most important ones according to me in order to create an effective communication with visuals :-
The fonts should be legit and appropriate and in tune with the communication.
Not more than 5 colours should be used. If there is requirement of more colours, add more colours while playing along with the shades of the colours used.
Use simple and easy to understand icons. Icons which are universally accepted are the best option. As they are used to enhance the appearance not distract from the topic.
They should be in tune with the content and tone. They should be added only to enhance the content.
Keep it minimal. Don’t get over-boarded with the illustrations, charts, content, etc. Just keep it simple and to the point. The simpler the better to understand and connect.
Various other dimensions also play an important part w.r.t. effective communication like spacing, call to action, etc. Do share what you think also adds to the above list too!