Today we’re talking to crochet designer Kat Witherall, who contributed the Retro Granny Square Scarf crochet pattern featured in our Fall 2025 issue.

Can you tell us a little bit about what inspired your design for this month?
After learning the interlocking crochet technique, I was immediately inspired by its unique double-sided effect. I knew I wanted to design pieces what could really showcase both sides and a scarf felt like a perfect canvas – it perfectly highlights the design from both angles. I wanted the design to feel both fun to make and versatile to wear.
What were some challenges about designing this piece?
One of the challenges with designing this piece was that the interlocking crochet technique can seem a bit intimidating at first glance. It looks complex, and that can be off-putting for some makers. But the truth is, once you understand the basic principles, it’s actually a very easy and straightforward technique. The real challenge is explaining it clearly without being able to show it in person—it’s one of those things that really clicks when you see it in action.
What are a couple of fun facts about you?
One fun fact about me is that I can crochet both left- and right-handed. It started as a challenge, but it’s actually been really helpful when teaching others to crochet. It’s a bit of a party trick in the crochet world!

How do you choose colors for projects?
One of my favorite tricks when working with two colors—especially in interlocking crochet—is to take a photo of the yarns and then convert it to black and white. It’s a super simple way to check whether the colors have enough contrast or if they’re too similar in value. Sometimes colors look great side by side, but once you start crocheting, the pattern can get lost if there’s not enough contrast. This little trick really helps me make sure the design stands out clearly.
What’s your favorite crochet tip?
Use your stitch markers, trust me, they are worth it every time!
What’s the most expensive yarn you’ve ever bought?
I don’t want to say just in case my husband read this!

Anything else you’d like to add? Anything else we should know?
I would like to share where the name Luna Crochet Designs came from. My name is Kat not Luna and I do not know anyone called Luna. My friend Jenny made me a beautiful stone decorated as a ladybird called Luna. When I first started my business, Luna was right there with me, and she still features in my YouTube videos and photos.
How can our readers find you online and on social media?
All my social media tags are @lunacrochetdesigns. You can find me on Facebook: www.facebook.com/lunacrochetdesigns
- Instagram: www.instagram.com/lunacrochetdesigns
- YouTube: www.youtube.com/@lunacrochetdesigns
- Patreon: www.patreon.com/lunacrochetdesigns
- or visit my website www.lunacrochetdesigns.com
Are you a crochet designer who wants to contribute to Crochet Foundry Magazine? We work with independent crochet designers to produce the gorgeous designs featured in our magazine. To find out more, visit our Submit a Design page and be sure to sign up for our Designer Calls be notified of design opportunities.