hehe, this is going to turn into a mini lesson about posting pictures, so this isnt really directed at you specifically, but to everyone.
first, dont link to external images. on this forum you can attach an image to a post -- that's preferable since it will last forever and not eat anyone elses bandwidth but ours.
second, attach the pic to your original post not as a separate post (you can modify your post).
third, you can display the attached pic anywhere you want in your post by specifying the code
fourth, the jpg format is not well suited to screenshots. it's good for photographs, but for screenshots, use png. Most screenshot tools can do png (my Screenshot Captor
can and does by default for example).