Pictures are a terrible way to figure out chainline.

Your hub sets the cog at 42.5-43mm from the centerline of the bike. Measure where the center of the chainline sits by sticking a ruler against it, to the center of the seat tube. Measure that distance. Subtract one number from the other. If you get within a few millimeters of zero, then you're okay.

Some people want exact chainlines and I don't blame 'em, but pick up a chain someday, hold it in the air so that it dangles, and feel how much side-to-side play it actually has. 2mm over a crank-to-cog distance ain't nuthin'...