Welcome to the site
It’s a good opening shot but as always, there is room to improve…
As the others have said the focus is spot on but this is an action shot and its totally motionless. The shutter speed used has frozen all the movement in both the rider and the background. While I agree on the whole with Venomator about plain backgrounds, ones like this can also work very well if they are blurred to enhance the sense of movement of the subject, to get a shot to work like that though you have to loose all the detail by using a small F stop and panning with the subject. If done correctly you can still get a totally in focus subject (rider in this case) and a very effective sense of movement from the blurred and out of focus background.
Hope that helps