Hostas love shade and they're tough as nails. To post pictures you need to use an image hosting site, or since you're a subscriber I believe you can use our gallery as a host. Copy your image address from the host and paste it between the [img][/img] tags. (The little Mona Lisa button).
It should look like this when you type it:
[IMG]http://i1279.photobucket.com/albums/y537/DevlynMarie/Clark3-16-1_zpsynlnharm.jpg[/IMG]
It will display like this when you post it:

Hope that helps!
Hugs, Devlyn