Click on the picture itself the view the pic.
Depends. You can use any hashtag, but the point is to use a popular hashtag that is looked at by a large audience. If you're just doing standalone art pieces, you can use something like #drawingoftheday or something...but if you're actually showing some comics work you can use #makecomics.
Not sure what list section is...I dont even bother with it. I'm assuming that some of the people you follow may be members of a group, subscribed to a group or something, or owners of something...like I said, I'm not entirely sure of its nature so I dont bother with it.