Similarly, Ygraine looks for standout characters and a strong story. "The best characteristic of a good picture book is the story or characters – the same as you would think for any adult story.
"Remember that just because picture books are shorter in length, doesn’t mean that a reader doesn’t want the same story arc as you see in any book, tv show or film – a beginning, middle and end are always important! They also need to be something you want to read time and time again, without boring the reader, or the child being read to."
Feeling ready to start writing your own children's picture book, or finesse work you've already started? Head over to WriteNow to submit your book before midnight on Sunday 11 July.