Because this role requires technical skills, tertiary study may be required. There are a number of shorter courses which could also be available to you – to test if it is what you might be interested in, or to grow your skills.
A Fine Arts, or Digital course would be very useful to build on your passions. There could also be three distinct pathways – Digital Designer, UX or UI designer.
There are a number of different ways to get a job as a Digital Designer. One way is the the Comms Council Graduate Programme.
Applying directly for any of these roles, make sure to emphasise your communication, organisation and the various technical skills you may have in your Cover Letter and CV. You may also have created a ’portfolio' or ‘Showreel’ of the design concepts you have created. You could use this to showcase your work in your application. These don't have to be real designs that have appeared in the world. They are speculative - how you would advertise products and brands that you've chosen. It is just a chance for people to see how you see the world through your previous work.