Is it almost like as if I were flying in the air? It's like as if you were me and I were you. Both incorrect , but common in normal conversation. "like " as in having rather similar meaning with "as if" or "as though", should be used before a noun , and NOT before a Clause. He looks like Joe / It looks like a box. "It was almost as if I were flying in the air" ok "It was as though I were flying in the air" It's as if you were me and I were you. ok

No that doesn't make any sense, use either or.