Yes, but your IMAGE link is beautiful! You forgot the step to downsize your image, that's all.
Resize it, then upload new version and paste that in the IMAGE link. We'll see the smaller size, but you'll need to clear your cache before the change will be visible to you. Paul says your computer holds onto the first one and displays that to you even if there is a new one. Clearing the cache gets rid of it.
At least that's what I think he said...I'm pretty illiterate when it comes to geek-speak.