If the projection you're using is equirectangular, you might want to use a tool like https://www.maptoglobe.com/ to see what the poles look like. Just based on what things look like, this map will have some pretty severe polar distortion.

Actually, assuming this is equirectangular, I quick threw this up on map to globe and yep, the poles are fairly distorted. If you ever want to plot this on a globe--or if you're going for realism--you might want to address these distortions before moving on.
pole1.png pole2.png