I think it's more Alice In Wonderland than Wizard Of Oz. I guess Oz and Wonderland do have some similarities. There might be robots like this in Oz. It's nice to see how innocent this setting is. I guess it kind of reminds me of the iron giant. I should see that sometime.
The blue patches are great. I also love the little flashes. Are those insects or just dust? It's especially cute to see the little teacup in this giant guy's hand. It's a great picture overall.