First of al I would like to say I absolutely love your work. The under tone of joy the is used as a medium is inspiring.
Second I am far from critiquing as I am am still learning. So I can really only share what I have learned and apply it to your questions.
In the character design course they give us the tool to proportion (large-medium-small) or some variation of that.
(Purple) In your masterpiece I see 3 segments. The toys (s), the children and the seating area to the first seal (m), and the sleeping giant (l). You could shrink the large portion a bit. This could patternize the size increments and answers @carolinebautista idea of moving the yeti to the lower left.
(Orange) The judges talk a lot about the three segments when grouping items. Same with the s-m-l but also creating different gap sizes. So moving the five items over May just do the job.
(Red) This is how I see the skeleton of the little girl. Iβm think maybe making her arms longer, legs short, and/or foreshortening on the closest leg.
I love the writing on the wall and the window and drawer open.
I did have one question. I noticed the yeti is holding a unicorn and the girl is dressed as a unicorn. I read that she holds onto her yeti because it reminds her of him and he is at peace when he reads to her. I think my interpretation is off and I apologize. I was wondering what your connection is here?
Here are some of my thoughts: I wonder if him dressed as a yeti would create a connection between the stuffed animal and the yeti outside that would diminish the barrier of the window by making him mor imaginary. Like how the boy sees himself with his sister. Kind of like the little girl loves her brother (snuggles stuffed animal) and the brother sees it comforting being a comporting bedtime teller (imagining himself carding for his sister while he reads a bedtime story). Sorry so long Iβm just in love with many aspects of this piece.
Really great job. Iβm sure what ever you d o with it will be awesome because for me it is already awesome! Thank you for sharing!
Much love!