Is this pan seasoned correctly?

I've had this pan for 2-3 years now. Had to redo seasoning a few times over the years. Last couple of weeks the sides started flaking even though it all looked pretty good. So I scrubbed the flakes off with oil and salt, rinsed and dried. I covered the pan (DeBuyer Mineral B) with a layer of grapeseed oil, tossed it in the oven while heating up to 260°C/500°F and then left it in the oven for an hour. The last time I seasoned it on top of the gas stove.

I'm not sure about all the tiny textural differences, so I wonder if I did it correctly or what I did wrong? I made sure to cover the pan in a thin layer and then wiped several times with a paper towel.