A representative simile openly compares one whole situation with another, with the two scenes apparent in the wording. A representative metaphor borrows the verbal description of one situation to present another situation without explicitly spelling out the comparison.
“Your hesitation resembles someone moving one foot forward and the other backward” expresses the comparison. Directly telling a non-moving, indecisive person “You put one foot forward and draw the other back” may become representative metaphor.
Both depend on resemblance between structured situations. What changes is how the two situations are expressed, not the existence of a shared pattern.