First (using a PC), I opened "Paint" (in accessories- under the start menu)
I saved the blank picture as a Jpeg.
Then using the online photoeditor: http://www.picmonkey.com/ I opened and resized my blank paint "photo" .
I wanted mine to have set blocked areas, I found Paint the easiest method to accomplishing this. I resaved my picmonkey photo and reopened it in paint. I used the "line tool" to section out where I wanted to put different text or images.
Note: If you save it and make changes, what you have previously saved can't be moved.
You can google some great ideas with "Family infographic a year in review" I found this one inspiring:
If you have further questions please let me know!