Exemplar Premier Wet Palette Bundle

I always get folds in my wet palette when putting the paper in. What am I doing wrong? Can't smooth them out without them appearing elsewhere. Any tups would be greatly appreciated.

Wargamers Edition Wet Palette

ART for the SOUL of it: ART TIP: Keeping Acrylic Paints Wet & Workable without a Stay Wet Palette

Best Wet Palette for Miniature Painting and Warhammer

Wet Palette Hydro Pack

The Army Painter: Wet Palette (TL5051) – Gnomish Bazaar

If anyone is interested in making a Wet Palette i use a food box lid and sponge i cut to shape. Works perfectly for me ✌👌 : r/minipainting

Sta-Wet® Handy Palette

Mr. Wet Palette for Acrysion Color

Masterson Sta-Wet® Premier Palette - New Wave Art