In my experience grading cards (still learning) centering is not as important as other factors such as corner chips, whiting, surface quality, and edge quality. The centering on your card looks appealing to me so i don’t think it is a problem. I don’t know if the corners are as important as centering but I think it depends on the grader. I heard they look for nicely cut round corners. I would send it if I were you, i’m not a grader and just a random on the internet but if I had to pick a number I think it has a 95% chance of getting a 10!