Could you please review ielts writing task 1 essay

The picture illustrates the formation of natural sand dunes.

Overall, there are three main stages involved in the forming sand dunes, beginning with the gathering of sand particles and ending with the accumulation of sand particles. Besides, there are four symbols presented on the diagram, which are used to illustrate for sand particles, wind directions, wet and dry ground.

In the first stage, sand particles on dry and wet ground are blown by the winds. In the second stage, sand particles continue to be blown by the winds. But only sand on the wet ground are accumulated to form small separate piles.

Finally, the third stage show how the sand particles continue to gather on the wet ground. As a result, there is an increase in size of the sand piles, which leads to the formation of sand dunes. The sand dunes change the wind direction by forcing it up on one side and down on the other side. The process of gathering and accumulating sand particles are then repeated on other areas, forming a series of sand dunes.