Step 1: Analyze the composition.
In the image, we can see that the composition is made up of various letters. The letters form a complex shape, but we need to count how many letters are used in total. To do this, we must carefully identify and count each letter involved in the composition.
Step 2: Count the letters.
Upon careful inspection of the image, we count the following letters:
- 3 'A's
- 5 'S's
- 6 'O's
- 4 'P's
- 2 'E's
- 7 'T's
- 4 'R's
Thus, the total number of letters used in the image is:
\[
3 + 5 + 6 + 4 + 2 + 7 + 4 = 31
\]
Step 3: Conclusion.
Therefore, the total number of letters used to create this composition is \( \boxed31 \).