How do you get the middle star coin on world 8 last castle?? its so confusing!!

Here try this one.
WORLD 5-4
You can find the Star Coin at this stage of this world. Look at the photo.

• At this stage, you should pick up a Bob-Bomb and then quickly jump to the ledge.
• Drop the Bob-Bomb in the white blocks to get rid of some of it and then drop down to the raft.
• The Star Coin should now appear.
  
• pick it up and then enter the pipe above.

WORLD 6-5
You can find the last Star Coin in a Secret Area with a Secret Goal.

• Look for the four item box in the water. like in this photo.
• You will need to jump or swim in the middle of the four boxes to reveal a hidden box that contains a beanstalk.
• Climb up the beanstalk to reach the other area.
• In the Other Area, you will need to pick up a propeller block.
• Get the coins and the go right to the second floating box.
• From this box, you will need to spin to reach the Star Coin and the Secret Goal.

WORLD 7-6

• After you came across some small parabeetles,then you should come to a line of big parabeetles.like in this photo.
  
• Look down low and you should see the Star Coin poking above the low clouds.
• Ride down to the Star Coin using the Last Big Parabeetle.
• Then wait for the small parabeetles. and then Jump down to get the coin and step on the small parabeetle. (Be careful in this part, you should jump at the right timing so that you wont fall off the clouds.)

WORLD 8-7

• You should ride the next platform down as you jump a geyser like in the photo.
• Stay near the front of the the platform so that you can grab the Star Coin before hitting the geyser.
• After getting the Star Coin, quickly jump to the platform above you to avoid the geyser.

Thats it. Goodluck, Hope my solution helped. Please give some feedback regarding my solution.

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you have to get ALL the STAR COINS from every world to unlock all the levels for the Star World! If its hard for you to locate them you can try youtubing lol, thats what I did when me and my friends couldn;t find ALL the Star Coins!

u can find the last star coin in the world 8 castle(rescue peach)braek the blocks if u are grown mario go to the end hold b and go the direction of the star coin before u hit the lower block hold the down botton

WHat you do is do not hit the 1st red button, then hit the second red button and then dont hit any more red buttons

THERE IS A HIDDEN ICON HIDDEN IN WALL HALFWAY THRU.

middle, top bottom, you will ear a noise like collecting a coin if you go the right way

Thats a puzzle you go in this order of platforms:
bottom, top and middle if I remember correctly.

This one can be a little tricky.
You'll notice before the middle mark flag that there is a small pipe under a little bridge. After the flag there is another pipe with some gray blocks over it. These are small pipes so you have to be the tiny mario when you enter the stage.

So, go get a tiny mario mushroom and finish the stage with it.
End world castles 3 and 5 have these but can be a little hard.
I've heard of stage 7-A being rather easy to get and go.

Once you have that, get to 8-8 and carefully move to the middle point.
You die after being hit just once, so be very carefull.
(I'd suggest simply focusing on the second coin alone and using a spare fireflower or the like after you get it.)

When you see the first small pipe, you can jump up and hit a hidden block containing a star just over it. Grab the star, it'll help.

With that get to the second pipe with the gray blocks over it and wait for the volcano rocks to fall and break the gray blocks for you.
Try to stand off to the side and wait for them to hit the middle block. Though you should be able to squeze under the middle one if your careful.

Once there go down the pipe and you'll run into a mini maze of sorts. Make your way through it to the Star Coin at the left and exit with the pipe at the top left.

From there I suggest using a spare fireflower or mushroom and making your way out of the stage.

Good luck, and have fun.

LEVEL 6-CASTLE
Use the moving ledge to get acrossthe first lava pit,followed by getting over the next pit by leaping from one moving ledge to the next,finding a ? block over the lava to hit with a Red Koopa Troopa shell.Then there a star COIN floating over the lava,use a Koopa Troopa shell to hit it and then collect it.Next go right and cross more moving ledges and watch out for the second COIN below.Grab it and get back up,go right to find a Red Koopa Troopa and a leap past two Podoboos and a lava pit.Go right to find a Red Koopa Troopa,a Power Up and the halfway marker,then go up via the block below.Head right to Super Jump off the Red Koopa Troopa to get on the granite block on the right then go right to locate the FINAL COIN

Enjoy
Hope this helps,please let me know

the last long rope before the cement platforms when you get to bowsers dore.... stand in the middle of the long rope and bounce up..... you will see a green tube, and it takes you up to the last coin....