|Hajra Meeks demonstrating the differences directly between the same illustration in watercolor vs gouache.|
Hajra is one of the most thorough and knowledgeable artists on YouTube that I watch on a regular basis. She specializes in watercolor, gouache, and other water media (like Inktense).
She's also the main artist who discusses watercolor versus gouache in the most detail on YouTube. You can view this video and others on YouTube.
Hajra's channel features many other instructive videos, and I highly recommend subscribing to her channel.
Ava Jarvis is an ink and watercolor artist with a portfolio site at avajarvisart.com. If you found this post useful, consider a one-time tip or supporting Ava on Patreon.