I look so dull in the photos I took yesterday. Do you have any tips for taking care of my skin?

Yesterday, I took a selfie with my friends, and I was shocked by how dull my skin looked under the bright lights. Even though I'd put on a lot of makeup, the image clearly showed how flaky my skin was around my mouth and the dead skin cells on my nose. I feel like it's time to really take care of my skin, and I'm really curious to know what skincare tips you all use in your daily lives. I feel like simply applying a sheet mask isn't enough, so I'm trying to completely overhaul everything from my cleansing routine to my basic skincare routine. I have particularly dry skin, so I want to be more meticulous about the ingredients in my cosmetics. Could you share even just one of your favorite skincare tips? Product recommendations are great, but I'd also love suggestions for healthy habits. I'd love to hear from you before the weather gets colder. Please share any tips you use at home.