Could anybody tell me the locations of all the castles secret stars?

These are all the 30 castle secret stars:
-one in the garden where you destroy the boos & they pop out the red coins (which you have to collect)
-one in the garden where you have to destroy the orange brick & go inside it (the garden with all the boos)
-one next to the clock (u have to b mario then collect the red coins)
-one next to course 3 (where you collect the red coins)
-one where you unlock the red ? Box(where you collect the red coins)
-two where you fight bowser the final time(with the red coins & the switch)
-two where you fight bowser the 2nd time(with the red coins & the switch)
-two where you fight bowser 4 the 1st time (one with the red coins & the switch)
-three where you have 2 drain the water and break the black brick (collect the red coins float with mario 1st switch hats & b luigi & go through the maze)
-two in hazy maze (where have 2 b mario & float &collect the red coins in the water
-one next to warios room (have to catch the glowing rabbits 1st)
-two inside warios painting (with the red coins & the 1 you have to b wario)
-one inside luigis painting (with the red coins & the switch)
-two inside marios painting(with the red coins & the switch)
-one in the painting next to the mini games (outside the door with the 8)
-two in the secret slide (1 you get if you past the slide under 21 seconds)
-three stars that the toads give you
-one inside the mirrors door(when you turn invisible with luigi)
Hope I helped
From,
Mini Mario

I made a mistake.there is only one star in luigis painting (which you collect the red coins) & there are 2 in the course next to the big clock (which you b mario & collect the red coins& and get the warios cap and break the black brick & there will b a star).