Canva One-Page Marketing Poster

I need a single-page poster template set up in Canva that I can reuse for future campaigns. The file must be fully editable—text, colours, imagery and layout—so I can swap in new offers without rebuilding the design each time.

Here is what I’m after:
• A clean, professional layout sized for standard poster printing (A3 or 18x24 in) and an alternate social-media-friendly version if it takes only a few extra clicks.
• Smart use of Canva features such as styles, colour palettes and locked background elements to keep the look consistent while still letting me update key content quickly.
• Clear hierarchy for headline, sub-copy, imagery and call-to-action.
• Delivery as a shareable Canva template link plus an exported PDF proof so I can see it exactly as intended.

Once I drop in my branding colours and fonts the template should be ready to go; please keep placeholder text and images obvious so nothing gets missed. If you have examples of past Canva poster work, a quick link will help me choose faster.