Test run of narrative images

In a group of four we had to come up with a idea for a image that has a narrative and tells a story. Our idea was boyfriend and girlfriend are meeting up, the boy has bought his girlfriend flowers however she found out that he's been cheating on her. So she has a bigger surprise she has a knife that already has blood on. This implies that she's already killed someone, the person he's been cheating with maybe...

However the image didn't work out as planned, it doesn't look real it doesn't look like this is how you'd meet up with your partner. We were also going to photoshop flowers and the knife into the image.