We do something very similar to this in Session 4 of the Foundations class:
First of all, find a picture or painting that brings you pleasure. Next, find a place to sit where you can be comfortable and won’t be disturbed. Position your picture in front of you where you get a good view without straining your neck or your eyes. Now close your eyes. Focus on your breathing. Inhale through your nose, and exhale through your mouth. Be aware of your body as the air moves in and out of your lungs. Establish a tempo to your breathing. After a few minutes, your body will start to relax.This can also be done with children as a game. It will help them with both focus and emotional regulation.
Now open your eyes and gaze at your picture. Take note of the colors, the background, and any unusual and interesting details. Try to memorize it, then shut your eyes again. Now try to recreate the picture in your mind and visualize yourself becoming part of it. Actually put yourself in the picture. Wander around inside it and see what the various components look like up close.
I found it right here.