Foot placement

Today I was cleaning and waxing my board and was wondering why is my wetsuit and butt so dirty. I realized this is not from the wetsuit and is from the reef shoe so it is my foot placement. I'm one of the weird ones that wear a shoe. Usually only really old man in my break will do such thing.
I also realized the photo I took is very distorted due to it being a wide angle lens.
I'm regular foot and I predominantly surf right hand breaks. Noticed my rear foot is not on the center of the board. Is this a problem and should I try and move my rear foot closer to the center and towards the tail of the board? I don't know how easy it would be to change it now as I've been unknowingly surfing like this for years. I probably need to keep looking at my rear feet after popping up.
I also realized the photo I took is very distorted due to it being a wide angle lens.
I'm regular foot and I predominantly surf right hand breaks. Noticed my rear foot is not on the center of the board. Is this a problem and should I try and move my rear foot closer to the center and towards the tail of the board? I don't know how easy it would be to change it now as I've been unknowingly surfing like this for years. I probably need to keep looking at my rear feet after popping up.