Use the POKER in the fireplace and then use the UNLIT TORCH on the fire to get the LIT TORCH (N).
Use the MUSIC BOX KEY on the lock (O).
Walk down 3 times and then go right.
Place the WHEEL on the cannon (P).
Put the CANNONBALL in the cannon and use the LIT TORCH on it (Q).
Take the GARDEN SHEARS, the 5/6 HELMET, and the 4/4 PLATE (R).
Exit the close-up, walk down, and go forward.
Use the GARDEN SHEARS on the rose stems (S).
After the rats run off, look in the window and use the LIT TORCH on the darkness.
Place the 4 PLATES on the mechanism.
Place the WATER PUMP HANDLE to make the lever (T).
Swap the plates so the flowers match horizontally when the lever is pulled (U).
Take the 6/6 HELMET (V).
Walk forward twice and look at the skulls.