I think VTS is great to use in the classroom. One thing I do is take a "picture walk" of a book before we read it. I ask students what they notice or make predictions on what they think might happen in the book, based on the pictures. This helps them begin to understand about making predictions and observations bases on the pictures. Its a fun way to introduce this an get the talking!
Here is a link to a website I saw that gives a little introductions to VTS, lesson plan help, an also additional resource! I thought it was helpful!
https://www.educationworld.com/a_lesson/teaching_visual_thinking_strategies.shtml