I wanna improve my writing during 3 days from now

I wanna improve my writing during 3 days from now.

 

on Sunday,  I have an exam in material academic writing.  I have 3 lessons all lesson has different from another lesson. Also has different thesis. 

I only want to know how to write strong thesis

 

Frist , write about happened thing and changed your life. 

 

 Second , write solutions and how to write solutions. 

 

Third , compared

 

I so interesting to improve my writing English.