Bright LinkedIn Carousel Banners

I need four square banners (1200 x 1200 px) that work individually yet flow together in a LinkedIn carousel. Each slide must grab attention in the feed, stick to my turquoise-and-yellow palette, and feature... (Budget: £20 - £250 GBP, Jobs: Adobe Illustrator, Adobe Photoshop, Banner Design, Branding, Figma, Graphic Design, Logo Design, Photoshop, Typography, Visual Design)