Beavertonj2

So I had an oil leak from my head. Got a new one in I follow the losen sequence and tq sequence when I put the head in. Now heres the problem when I fired it up theirs some kind of ticking noise and loss of compression. Took out all the spark plug and saw that cylinder 2 pistion had hit the spark plug. The plugs are bent and broken what could be my problem? Not even sure if the valves are bent too. Any help would be great!