No, that's not the way to do it. (You get a "thumbnail" that way that the reader has to click on to open in a separate tab/window.)
I explained it before. Up at the upper right, click "My Account". Select "My Albums" from the drop-down menu. Click "Create Album". Give it a name.
Now you can add pictures to the album by clicking "Upload Pictures". After uploading, open picture by clicking on its thumbnail in the album. In the picture display page, click on the "BB Code" link to highlight it; right-click, "Copy" to copy it to the clipboard. Now you can paste the link into your post, which will show the picture embedded in the post, not as a clickable thumbnail.