What's your workflow for redesigning all the graphics on an existing website?

Hello community,

I'm planning to re-brand the graphics across my party rental business “Hafla Rental”. The layout and structure will stay mostly the same, but I want to redesign the visual assets, including hero banners, icons, promotional graphics, category images, and other supporting visuals to create a more modern and consistent look.

I'd also appreciate any advice on keeping everything consistent throughout the project. If there are any Illustrator features, libraries, or techniques that have made this process more efficient, I'd love to hear about.

Thanks in advance!