Thank you! Those are pretty tough to get, basically there are hidden passages and you have to use crouch to find some hidden paths for both. After you blow up the wall near the heart, jump up into a hidden path and once you're on top you have to crouch around into walls until you find it. The coin has a path tht you have to jump up into on the left side, there is a long tunnel you will fall down on the very left, hold right as you fall and follow that tunnel to the end and then crouch into the wall.