When you make a post, the top line where you can put a url has a small image icon under and to the left of it. You can put your image there and it’ll show up on the main page without having to click through. I just learned this a couple of days ago when someone pointed it out to me. I was doing it like you are now.
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For all things Futurama
Rule 1: Don’t be a jerkwad!
Rule 2: Alternate video links to be linked in a comment, below the original video.
When you make a post, the top line where you can put a url has a small image icon under and to the left of it. You can put your image there and it’ll show up on the main page without having to click through. I just learned this a couple of days ago when someone pointed it out to me. I was doing it like you are now.
But I’m not the boss of you. Do what you want.