Maybe having the trainer come and give you a twice monthly lesson on your own horse would help. The trainer might have some good feedback and give you things to work on while you are out enjoying your mare.
You don't have to worry about what other people think, but you do want to get the most out of your mare, and if your position , or hands, or use of the leg or what is needing improvment, then you'll get more out of your horse with "eyes on the ground".
I kind of laugh when I think about things needing improvement. There is NEVER a time when something doesnt' need improvement! I don't have lessons now, and cringe to think about subjecting myself to a trainer, but I know that there are just some things I can't do on my own.