Less is More - The Effects of Light in Mosaic Composition with Kate Kerrigan

Learn how to work with minimal materials while creating a mosaic composition

  Enroll in Course

Course intro and interview with Kate Kerrigan and Tami Macala

Kate shares many tips and tricks on how to harness the effects of light in composition!


Learning a new mosaic art technique can be so gratifying and exhilarating. How would you like to learn a unique approach to working with less color while harnessing the power of light in a mosaic art composition? If you answered yes, join Kate Kerrigan in her online course “Less is More: The Effects of Light in Mosaic Composition,” exclusively here at Mosaic Arts Online. This course will focus on using light to create a mosaic art composition.

Kate has been making mosaics for many years and now she is here to share her best tips and secrets she has honed over years while creating in her unique mosaic art style. While traveling to Italy Kate was able to learn from many of the mosaic masters, and now you can learn from her. Kate's background is in photography and graphic design but mosaic making has become her true passion.

Kate will start by exploring the fundamental principles of mosaic art and mosaic design and how these elements can elevate your compositions. She will show how to work with other materials such as black smalti and four shades of stone to create intricate textures while maintaining precise lines.

Throughout the course, you'll acquire invaluable skills, including:

  • Kate's personal favorites when it comes to stone and smalti selection.
  • Kate's trusted mosaic tools and adhesive choices.
  • Crafting a customized back frame substrate for your mosaic artwork.
  • Mastering essential art elements and design principles for composition success.
  • Applying your designs to the substrate.
  • Expertly cutting black Italian smalti (Piastrini and Contorni).
  • Creating textures in your mosaic trees with black smalti.
  • Cutting stone using a special tools called the hammer and hardie or wheeled mosaic nippers.
  • Crafting a light source within your mosaic artwork.
  • Achieving balance in your background through tesserae size and placement.
  • Creating a gradation with minimal colors.
  • Blending different shades of stone.
  • Adding those final finishing touches and expertly cleaning your mosaic artwork.

This course will give you the skills and confidence to embark on your creative style of mosaic art while utilizing art elements and design principles that can take your art to a new level.

Kate has included in this course a detailed list of her suggested tools, materials, and resources. Kate has also included her patterns used to create the mosaic piece you see in the photo above.


Kate, I love your work so very much. My favorite, and it is difficult to have a favorite, is your Central Park scene - soooo magnificent. Thank you for this very detailed course. Libby G.

Kate, I just want to say what an amazing course this is - I have watched it twice over whilst waiting for materials to arrive! Thank you! Rosie E.

Thank You so much for the course. I can't wait to try out some of these techniques.

Beverly W.

Your Instructor


Kate Kerrigan
Kate Kerrigan

Kate Kerrigan was born and raised in La Crosse, WI. She attended the UW-Madison (’93) earning a bachelor’s degree in environmental studies, gaining a deep understanding, respect and love for the outdoors. With a move to San Francisco shortly thereafter, she tapped into her innate creativity, becoming an avid photographer and studying graphic design, all which led her to a mosaic workshop. Realizing wholeheartedly that she is a hands-on person, a maker, she instantly fell in love with the tactility of the medium and has continued a career in it for the past 24 years. Equipped with the classic mosaic materials and techniques she learned under masters in Italy, Kerrigan breathes fresh air into this ancient art form with her contemporary compositions. Her introspection and quiet confidence are reflected in the maturity and subtleties of her work. With a sensitivity to place and awareness of surroundings, her mosaics are evocative and compelling. Last year she was invited as the keynote speaker at the joint 2022 Society of American Mosaic Artists and Stained Glass Association of America conference to present her cross-country pandemic project, "Piecing Us Together”. Also notable, Kerrigan was included in "80 Contemporary Mosaic Artists", a book comprised of mosaic artists from around the world published in France, 2021. She has been awarded, recognized and published on national and international levels and is widely known in the mosaic community. Her work has been shown in Italy and Turkey, and throughout the United States, actively showing in Oregon and California. Currently she produces and resides in Redmond, OR.


Course Curriculum


  Less is More - The Effects of Light in Composition with Kate Kerrigan
Available in days
days after you enroll

Frequently Asked Questions


When does the course start and finish?
The course starts now and never ends! It is a completely self-paced online course - you decide when you start and when you finish.
How long do I have access to the course?
How does lifetime access sound? After enrolling, you have unlimited access to this course for as long as you like - across any and all devices you own.
What if I am unhappy with the course?
We would never want you to be unhappy! If you are unsatisfied with your purchase, contact us in the first 14 days and we will give you a full refund.

Get started now!