Sprite image not showing up

I am a beginner and am creating a coloring book app. To do this, when the canvas loads, I have a static sprite get created to show the image on top of the drawing area so you can color in the image without drawing over the outlines. I have a gallery screen for users to pick the image they want to color but I cannot get the chosen image to pop up. Any help is appreciated thank you.

Gallery Screen


Canvas Screen