Powder foundation skin prep?

I'm using a powder foundation from bare minerals and I'm not sure how to "prepare" your skin when using a powder foundation. Is it different? I have normal to dry skin so I'm using a moisturiser and spf, sometimes one cream that has it combined. I let it dry down, then I put my foundation on and use setting spray. I'm especially dry around my nose wings and the powder tends to gather up there and it doesn't look good. I'm feeling like in doing something wrong since that happens. Should I use some kind of primer? I've always felt like primers doesn't give enough moisture, but maybe I should use them after I moisturise? But that feels like a lot of stuff on my skin. If anyone can give me advice I'd be grateful. In also only using cruelty free products.