How to clear Leaf Stage, also known as The Exit, in Super Mario Land 2: 6 Golden Coins.

How to Clear Leaf Stage
Go to the right, and there is an Ant on some leaves, followed by a Battle Beetle, which can walk left and right but can also fly toward you.
Go right and hit the ? Block to get a Super Mushroom or Fire Flower, then get on top of the Block if you aren't there already, and jump straight up to reveal a Hidden Block and get a 1-Up Heart. Try to land on the leaves on the right.
To the right, there is a Piranha Plant that comes up and down from the pipe. The second pipe doesn't have any monster in it, but the third has a Venus Fire Trap.
Go to the right and get the coins when the Piranha Plant goes back up into its pipe.
Go to the right, and there is a Venus Fire Trap in a pipe. After that pipe, there is an Ant. Go to the right from there, and land on the branch below the leaves. Go to the right until you're up against the tree trunk, and jump straight up to reveal a Hidden Block that contains a 1-Up Heart.
Go up the leaves, and there will be a platform that goes up and down. When the platform reaches the top, jump onto the leaves on the left. If you're Bunny Mario, you can run and jump to the right, and tap the jump button to reach a branch with a ? Block over it that contains a Moneybag. If you're not Bunny Mario, there is a Carrot later in the level that you can use to get the Moneybag if you wish.
Go to the left along the leaves, and hit the ? Block to make a 1-Up Heart come out. Go to the left and make a running jump up through the branch to get the 1-Up Heart.
Don't go to the left yet. Instead, go to the right and stand on the rightmost Empty Blocks, then jump straight up to reveal a Hidden Block. A 1-Up Heart comes out of it. It will fall onto the leaves below, so if you don't catch it at first, just fall straight down from the right side of the Empty Blocks you were standing on, then jump to the two leaves on the right to get the 1-Up Heart.
Go to the left and do another running jump to get back on the branch above you, or you can jump across the platforms on the left, but they will fall if you stand on them for too long. After the branch and platforms, there is a Bee Fly that will fly away to the left when you try to jump on it, so either hit it with a fireball, or ignore it. Jump over the gap in the leaves.
There is another Bee Fly to the left, and then a diagonal platform. Get on the platform and jump onto the leaves at the top, where there is an Ant. Get on the next platform and jump onto the leaves at the top. Jump up through the gap between the Empty Blocks to get a Carrot. There is a pipe above the coins that has a Piranha Plant coming out of the bottom of the pipe and a Venus Fire Trap coming out of the top. You can stand on the leaf above the Empty Blocks where you got the Carrot, and go to the right and start hovering through the coins from there, then just hover while you wait for the Piranha Plant to go away, and hover to the right through the remaining coins.
Then go to the right, and there are two platforms that will fall if you stand on them for too long. Stand on the right side of the leftmost platform and jump straight up to make a 1-Up Heart appear. Then jump to the next platform.
If you got the Moneybag earlier, or just want to skip it, get on the upper set of leaves and skip this paragraph. If you didn't get the Moneybag earlier, and you're still Bunny Mario, stay on the lower set of leaves as you go to the right, then when you see the branch on the right, hover down and to the right to reach the small branch that has a ? Block over it. Hit it to get a Moneybag. Then make your way back to the two small platforms, and this time get on the upper set of leaves.
Go to the right and get on the moving platform, and jump from it to hit the Bonus Bell and complete the level. If you hit the Bonus Bell, you will play Mario Catcher.
After the Level
After you complete this stage, you can continue on to Owl Stage, which is the final stage of this zone, or Bee Hive Stage if you haven't done it yet.
Or you can go to any of the other zones: