Learn this first

Then start by doing this exercise to practise or that one.

You could also do this one 

Look at this message, can you think of others of that kind in which the future tense is used ?

Read that joke :

"Teacher: Can people predict the future with cards?
Student: My mother can.
Teacher: Really?
Student: Yes, she takes one look at my school report and tells me what will happen when my father gets home."

Do you know any that you'd like to share?

Read that poem
And try to write one in the same way.

Discover the vision of some children for 2020 here.

Or listen to a very old song about a girl who says what she will do when she grows up.

You could also watch this very easy cartoon just for fun.

Well I hope your future will be better now and especially your future marks in english!