Storyboard template, A4
Widescreen frames two across on A4, each with ruled lines underneath for action, dialogue and camera notes.
Opens with these settings already loaded. Change anything you like, then download as PDF, PNG or SVG.
Draw inside the right aspect ratio from the start
A storyboard frame at the wrong aspect ratio quietly misleads everyone downstream. Composition that works in a squarish box falls apart in 16:9, heads end up badly placed, and the empty space you were relying on either appears or vanishes. Since the frame is the one thing a storyboard is actually specifying, it needs to be the shape you will shoot. Use 4:3 for archival and some broadcast formats, and 9:16 for anything destined for a phone.
The notes matter as much as the drawing
The lines under each frame are not an afterthought. A storyboard has to carry shot type, camera movement, rough duration and any dialogue or sound cue, information no drawing conveys on its own. Boards that are all picture and no annotation get reinterpreted on the day, which is exactly what boarding was supposed to prevent. Two frames per A4 page leaves enough room to write properly rather than cramming.
You do not need to draw well
This trips up more people than any technical consideration. A storyboard communicates staging, framing and continuity, where people are, what the camera sees, what changes between shots. Stick figures with clear sightlines and a legible arrow do that job. Careful rendering does not add information and takes time you will want back later. If you can draw, draw; if you cannot, board anyway.
Printing it accurately
This only measures correctly if your printer doesn't rescale the page. In the print dialog set Scale: 100%, not "Fit to page" or "Shrink oversized pages". If you're not sure it worked, print the calibration page, measure the ruler on it with a real ruler, and it will tell you exactly what your printer is doing to the page.