Everytime when I import (png) images to InDesign I get poor quality (pixelated/small resolution) I dont know much about that software yet. I basically made image in photoshop and paste it into InDesign and now I want to make PDF presentation of it. I have that Quality of preview set on high.

This is my work. On right is preview from InDesign (it looks like this even after exporting to PDF) and on the right is how it looks like in Photoshop (200% zoom). What to do? The size of image is perfect for A4 format. It also says 300ppi.