Try this exercise - ask a friend to help.
In this exercise, you will look at a picture (A) and your friend will look at a similar picture (B). You will need to describe your picture and ask questions about your friend's picture. Your friend will do the same. Your objective is to find the differences. Do not look at each other's pictures.
Exercise 1 Picture A, Picture B
Exercise 2 Picture A, Picture B
Exercise 3 Picture A, Picture B