John David Anderson


Unlock Your Artistic Potential

Mentorship is the fastest way to go from where you are today, to where you want to be!

Learn How Mentorship Works or join this mentors group below.

Mentoring Aspiring Artists
Not sure if you’re an aspiring artist? Visit our How It Works page.

MEDIUMS: Oil Paint | Graphite | Acrylic
SPECIALTY: ✔ Technical

Painting is his passion. If you ask John, he’ll say he has painted forever. Inspired by Andrew Wyeth as a young boy, later Tom Thomson and others from the Group of Seven, John continues to explore the dynamics of colour, light and design borrowing from contemporary masters with an impressionist flair.  His works range from miniature to massive. Painting en plein air, on location and ala prima, all in one session is his main focus. Passing that joy on to others has led him to teaching summer courses for Fleming College, Southampton Art School and a number of other arts organizations around the province. Art travel tours to Provence in the south of France and Tuscany are all part of his art practice.  

Artwork by Michaela Hoppe
Artwork by Michaela Hoppe
Artwork by Michaela Hoppe
Artwork by Michaela Hoppe
Artwork by Michaela Hoppe
Artwork by Michaela Hoppe
Artwork by Michaela Hoppe


Listed below are this Mentor’s specialty skills. Join this group if you want to grow in these areas.

Specialty: ✔ Technique



Color and Composition


Teaching How to Self Critique


Providing Art Critiques


Supplies and Tools – what to use, where to save, and where to spend


Studio Setup for Art Production


Technique Demos


Alla Prima & Large Scale Works


Plein Air

“Mastrius has done wonders for my confidence. I have managed to step way outside of my comfort zone which has in turn given rise to so many more opportunities to further my art career.”
~ Deb, Emerging Artist


select your mentorship group

If the group you’re interested in has a waitlist, you have the option to join another group to get started. When your group opens we can transfer you over.


Artwork by Michaela Hoppe


  • The ArtBank Collective, Clarksburg, Ontario
  • Double Doors Gallery, Anten Mills, Ontario
  • Ethel Curry Gallery, Haliburton, Ontario
  • Quest Gallery, Midland, Ontario
  • Southampton Art Gallery, Southampton, Ontario
  • Willow Gallery, Eglington Ave, Toronto. ( now closed )


  • Former Manager, Curry’s Artist Materials, Barrie location
  • Art Materials Education Sales, Universities, Colleges and School Boards across Canada for Curry’s
  • 25 years of Workshops, Plein Air, Studio and Zoom
  • 20 years Plein Air and Studio Classes for Haliburton School for the Arts
  • 5 years classes and workshops, plein air and studio classes, Southampton Art School
  • private coaching and mentoring
  • 6 years leading painting trips to Tuscany and Provence