To unscramble 'accessorial', follow these steps: 1. List all the letters: A, C, C, E, S, S, O, R, I, A, L. 2. Start by identifying smaller words within the letters, such as 'access', 'solar', 'score', etc. 3. Combine these smaller words to see if they can form larger words or the original word. 4. Look for common letter pairings, such as 'ss', 'cc', and 'or'. 5. Rearrange the letters systematically, trying different combinations until you find recognizable words.