Its tough to say without seeing your head in person but there is a very easy test: after you are done shaving and clean up and dry off and so forth, rub your hand around your head. Go back, forth, side to side, circles... Every which way you possibly can. If you feel any resistance in Any direction (some describe this as a "sand paper" or "gritty" feel) then that is your against the grain direction which means you could possibly achieve a closer shave by adding a pass in that direction. If you do what I said above and feel no stubble of any sort in any direction at all then that means you have achieved the closest shave possible for you and suffer from something many of us sly guys do which is the dreaded shadow haha.
By the look of it I would say you probably are not going atg (all around atleast) however without actually seeing your head in person it is difficult to tell as you may just have a pretty serious shadow, which isn't a bad thing or anything wrong but means you may always have visible "hairs" like that