Be specific so I can get a clear picture of your vision. For example, if you were doing an anniversary infographic you could say something like:
"I definitely want an illustration of us in our wedding attire to the be main graphic, and I have 9 items that I want to include: 5 years of marriage 7 family vacations (with an illustration of an airplane) 20 cars totalled (crumpled car illustration) 47 viral videos created (youtube type graphic) 2 precious offspring birthed (picture of two babies) 10,342 Frozen viewings (picture of our children singing 'let it go') " etc, etc. Just basically describe what you want it to look like.