When you first add the image to the question, it probably won't look exactly like you wanted it to, so you'll need to manually adjust it. This is a very simple process.
The first thing you need to make sure of are the actual dimensions of the image. Is it too large? Too small? If it is, you need to go back to the question, open it for editing, and go to the Insert Image dialog window. Alternatively, you can re-enter this dialog window by first clicking on the image and then on the Add Image button in the rich-text editor. Change the numbers in Width and leave the Height blank, or vice versa. The program will automatically determine the other value and not stretch the image. It is best to use this method unless you have specific dimensions you want to use.
Once the dimensions are in place, save and preview the question.
If you first select the image, you will be ready to move on. If you did not first select the image, you will be creating an additional image in the question. You may want to delete the old image.
The actual location of the image on the page may not work or it may not look how you thought it would. This isn't a problem. The first thing you may want to do is switch to the full-screen editing mode, as your screen is more likely to have dimensions closer to those of your site.
You can see the image in the question. You are able to click and drag it to a different location in the question. You can also use the Spacebar or Backspace and enter to adjust left/right/up/down locations. However, reinserting is probably a faster route to altering the image location. When you have the image where you want it, preview the question to make sure you like the look of it.
Now, I have adjusted the previous image using my mouse to click and drag it to where I wanted it. The question looks better now. It took me about 30 seconds to make the changes to the previous item. Here is what we have now. Looks better, right?
Source: Image courtesy of: freeimages.co.uk