A sewing machine includes a sewing portion, a processor, and a memory. The sewing portion is configured to sew a pattern on a sewing object. The memory storing computer-readable instructions that, when executed by the processor, perform the processes. The processes include the acquiring reference data representing a relative positional relationship between a sewing position and an arrangement position. The sewing position is a position of the pattern sewn on the sewing object by the sewing portion. The arrangement position is a position of a decorative component arranged on the sewing object. The processes include displaying, on the basis of the acquired reference data, a mark that indicates the arrangement position corresponding to the sewing position.