What would my results look like with creatine &...?

Optimum Nutrition 100% Gold Standard Whey Protein? I'm 5'7 1/2 and weight about 148. Would I pack on more weight and size? Or would it slim me down? I wanna gain more size and muscle. Also, if i'm gonna decide on taking these two..would I put my 5g of creatine in with the protein shaker along with the protein or take it separate? Thanks lol