[@ConanStargazer]  
The coding cheat sheet isn't very helpful for images, but you can upload them to google drive or photos first (assming you drew it or have it saved, if its just an internet pic just open image in new tab), and then get the link of just the image (open image in new tab), and then paste it in between the image tags you get when you click the little picture icon in the text options. 
Hope that makes sense and helps ^^