How is a spit formed?

I always feel it is best for GCSE students to revise off mark schemes. With the formation of a spit being a recurring question in papers, mark schemes will be foundational to enhancing the student's understanding of necessary details.
The landforms are created by the process of longshore drift. Some eroded material is up caught up within the waves and is carried by the sea along the coastline. Material is carried along the shore in a zigzag fashion by waves as they swash material up the beach at an angle and backwash material down the beach at a right angle. The angle of swash is determined by the prevailing wind.
Spits are formed by longshore drift in areas of relatively shallow and sheltered water where there is a change in the direction of the coastline. Deposition occurs, resulting in the accumulation of sand and shingle. The material initially deposited is the largest material, dropped due to the reduction in energy. There is a distal and proximal end. The distal end is hooked due to changes in wave direction.