Continue building "tentacles" out from your solved white face. Solve the next set of faces (yellow, dark blue, red, etc.) by forming stars and inserting corners/edges. Think of each new face as a 3x3 that you are solving layer-by-layer. Phase 2: The Last Layer "Cheat Sheet"
Do you have a on the last layer that isn't working with these algorithms? How to Solve a Megaminx! [Beginner Tutorial]
The last layer (usually gray) is where you can't just wing it with 3x3 logic. Use these four specific steps from GANCUBE's Official Tutorial and other experts: Algorithm: F R U R' U' F'
Repeat this until all five gray edges are facing up. If you have a "line" or "arrow" shape, hold them at the 11 o'clock and 6 o'clock positions before performing the move. Algorithm: R U R' U R U2' R' (The "Sune" algorithm)
While doing the final R' D' R D moves, the rest of your puzzle will look scrambled. As long as you finish the full sequence for every corner, it will magically resolve itself at the very end.
The hardest part isn't the moves; it's finding the pieces. Stick to a consistent color order (e.g., White →right arrow →right arrow →right arrow Red) so you always know where to look next.