A community event poster has to work at a glance on a phone and still hold together when printed. In Canva, resist the urge to decorate the page before deciding what a viewer needs to notice first: the event name, the date, or the location.
Pass one is the message
Start with a blank design or a simple template, then add only the essential copy: event name, date, venue, and one clear next step. Put the most important line in its own text box so you can resize and position it independently. If two details compete for attention, decide which one should lead before adjusting colors.
Make the reading order obvious
Set a clear type hierarchy with a prominent title, supporting event details, and smaller secondary information. Use no more type styles than the design needs, and check that the date remains easy to find at a reduced preview size. Align related text boxes and use consistent spacing to show which details belong together.
Use color with restraint
Choose a background and text combination with strong contrast, then reserve a brighter accent for one element such as the date or call to action. Canva's alignment guides can help keep edges tidy as you move elements, but leave breathing room around the page rather than pushing text to the border. Before exporting, check the design at phone size and verify the final dimensions match where the poster will appear.