HOW DO YOU UPLOAD PICTURES ON SPACEHEY I'M SO CONFUSED

!!I apologize for any mistakes,English isn't my first language.!!

I want to upload an image and everytime I put the URL for the image it doesn't show up (for me).

I have tried everything but I can't see the image.

Please tell me if I did it right (or how to upload images,I won't mind haha). Thank you!