PERTH, AUSTRALIA – 303 MullenLowe Perth is welcoming National AWARD School Winner Sarah Cassell as its newest Art Director.
Cassell steps into an agency buzzing with creative momentum, joining an accomplished team led by Executive Creative Director Sara Oteri. She’ll be teaming up with copywriter Ellysia Burton to craft standout campaigns across a diverse portfolio, including government, Lotterywest, St John, and a growing roster of new business wins.

From her early days at DDB Sydney to carving out a name for herself in Perth’s competitive creative scene, Cassell has been on an upward trajectory. In 2024, she not only took home the WA AWARD School title but also clinched the national win and topped the outdoor/poster category.
303 MullenLowe Perth ECD Sara Oteri said: “When I met Sarah while tutoring AWARD School, I was immediately impressed. I saw her poster execution and laughed out loud – that rarely happens. Apart from her obvious creative talent, of which I’m excited to see blossom with us, she has all the qualities you’d hope for in a young creative. She’s determined, she has taste, she’s intuitive and insightful and a bloody good sense of humour. She also believes the best ideas start with human insight, and lived experience has given her plenty to draw from.

“Paired with Ellysia, the two are going to do great things. Both have come from within the industry and are now making their mark as fully fledged creatives. We’re thrilled to be able to foster talent locally, and keep the talents of a nationally-recognised creative here in WA.”
Cassell said of joining the agency: “303 MullenLowe has long held a place in my mind as an agency that pushes past the expected — a place I’ve always wanted to be. Since meeting the team, I’ve never been more certain it’s the place for me. The crew is exceptionally driven and sharp; I’m confident we’ll make exciting work together. For me personally, I’m excited to continue building momentum on what has been a huge period of creative growth.”