If my plan is to perform both a brow lift and upper eyelid surgery, I like to do the brow lift first, and then work on the upper eyelids about six weeks later.  It's a small hassle for the patient, but I think it gives better results.

When performing the upper eyelid surgery, I like to take off enough skin that the patient can't quite get her eyelids closed for a couple days after surgery.  By the end of the week, the lids are closing fine.  That way, I am convinced that I removed all of the skin that I could safely remove.

If I'm elevating the brows during the same operation, it's not safe to be that aggressive with the skin excision on the upper lids.  I have to skimp on the lid excision, and the result isn't quite as good.