You can post images using a internet image service, i´m using postimage.org.
- First make the capture ingame
- Upload the image to the server, postimage.org or whatever
- Use the codes that the server generates to paste into your post, you must use the right icon tools to make them visible
Look at below Font size and Change Color Options
As well you can use the Hyperlink buttom to make your download link clickable.
Sorry about the language, i hope you understand