Canva A3 Poster Alignment

My A3 poster in Canva is 95 % finished—branding, colours, fonts, even subtle animations are already locked in. What I still need is pixel-perfect alignment: • Every text block, image and decorative element must sit on a consistent grid so the spacing feels naturally symmetrical... (Budget: £20 - £250 GBP, Jobs: Adobe Illustrator, Adobe InDesign, Adobe Photoshop, Canva, Graphic Design, Illustration, Illustrator, Photoshop, Poster Design, Print Design)