Improving my skin and blotchy skin tone?

Hey I have pretty ok skin, I do get a few spots and red marks on my skin. My face is somehow incredibly dry and can go very oily in the space of an hour and my pores always get clogged no matter what I do! Does anybody have any tips on what I should do to get a flawless skin tone and complexion? I do use concealer for the spots so i'm up for using anything really! Thanks =)