To solve this puzzle, select the tools in numerical order (1-5) and use them to carve the wood piece.
Take the DOLPHIN WHISTLE (Q).
Call the dolphin with the DOLPHIN WHISTLE (R).
Zoom into the girl; talk to her and give the MOUNTAIN FLOWER to her (S).
Take the FISH KEY (T).
Zoom into the boat; insert the FISH KEY into the lock (U).
Zoom into the seat; take the ACTIVATING AGENT (V).
Move forward to the right.
Zoom into the cockpit; read the notes (green) and take the PHOSPHORUS (W).
Play the HOP.