As Snakedriver suggested, you can swap the rings and check the results. I agree with him it probably will not make a difference, and if they are inexpensive, I would think they are not a long range set, but if they were (one ring standing taller than the other, giving a similar result of a 20 MOA base, [I've never heard of such a thing!]) it could tell us something.
It appears your rear ring can be positioned 1 more slot to the rear, the the front ring positioned 1 more slot to the front. This has little to do with your main problem, but it is a good idea the position the rings as far apart as the scope, mount, and function, will allow, as this makes provides the best rigid mount as possible.
The position of the scope, although it does look a little farther to the rear than necessary, depends on how you hold the rifle when shooting. The scope has a preset eye relief and you need to position the for/aft position to optimize on the eye relief distance. The height of the scope doesn't appear to be that low, but again it depends on how chunky your cheeks are. With your cheek laying on the top of the stock (comb), you should be able to center your eye looking through the ocular lens (lens farthest to the back of the scope). If you can....you don't need it any higher and doing so will cause other shooting problems. However, if you can't get down on the scope to see through the center......you should try the riser you have or other mounts as suggested by others in this thread.
Here is a photo of a scope on an AR-15, which is a little higher than yours, but without the short riser, I can still get a solid cheek spot weld on the stock comb and line up with the scope.