[Poster is cropped]

for some reason my movie poster comes out cropped whenever I save it and open it on a different machine. I have attahced what it comes out like. Can I resize this somehow? Thanks !

MOVIEPOSTER2.afphoto

[How to see through shape(eye) of pixel layer to two background layers]

I have to three layers in Affinity photo and the top layer is a pixel layer which I used fill white paint to fill a man's silhouette. I would like to basically give him two eyes that are shaped like eyes but you can see the background two layers underneath, how would be the best way to do this? I have tried using the eraser on the white paint but that is not working. I tried the selector tool to draw the shape of the eyes on the two background layers but then could not copy and paste that over. Thanks