Yisrael, I agree with Isaac’s comments but I’d like to add a thought or 2
Your image looks like a 3D render (as do all the competitors). Why don’t you use a real photo of the product. I think it would look better and it would stand out because of it. I’d definitely show a knife like in Isaac’s example.
You could also experiment with a model’s hand holding the knife on the block (that would be different to all other images) but it might work as the hand might get in the way. It’s worth experimenting with though.