Here's a great tutorial found over at steph modo's eponymous website to go from small:
After up-loading your image, begin by going into the 'Edit Html' area of your posting. Find the code set that looks like this, and delete everything in the circled area below:
Next find the part of the code that reads, /s and then a number. Usually it's forward slash s and the number 400.
images: Steph Modo