In order to create a seamless pattern in Photoshop open the desired image and choose Filter > Other > Offset.
Julieanne Kost's Blog Adobe Announces Updates to Photoshop 2021 (v22) and Adobe Camera Raw (v13)
How To Create a Geometric Pattern in Adobe Illustrator
CREB June 22,2012 by CREB®Now - Issuu
Sand Zen Garden - Seamless Patterns FDVRHE5
Quick Print Pro, November 2022 by The Magazine Production Company - Issuu
Julieanne Kost's Blog Adobe Announces Updates to Photoshop 2021 (v22) and Adobe Camera Raw (v13)
100 seamless geometric patterns
Layer effects and styles in Adobe Photoshop
Take Shape Magazine
Photoshop Sandbox Time, Creative Compositing in Photoshop
Packaging and Warehouse Supplies Source Book by Federal Buyers Guide, inc. - Issuu
Layer effects and styles in Adobe Photoshop
Shooting Fashion in New York City - Scott Kelby's Photoshop Insider