1.children work under the scorching sun though they are unwilling to do so.
2.They sacrifice their happy life(childhood).
3.they kill their thoughts,ambitions and dreams.
4.they are forced to do the work for less wages.
5.Though they are unwilling to do,their parents force them,for the financial benefit.
I added few points just to support your essay .I hope its useful.
I just added few points.I hope you make para with the help of those sente