1.)  Make sure child understands how to answer questions about immediately present

• Knows what each wh- word means
• Ask about what they are looking at
• Ask about pictures in books

2.)  Once the child can do that, work on past events

• Start with something that just happened (5-10 seconds prior), ask what happened
• Gradually increase length of the time between question and past events
• Take pictures and have child describe what happened
• Give clues like “you did something with paint and a paintbrush”
• Ask the child to recall the same even multiple times
• Work on sequencing common events and describing

Resource:  http://www.speechandlanguagekids.com/sequencing-game-following-directions/