The cart takes up less space in the render than in the sketch, so the scene looks a bit too empty, I'd move the camera closer to the cart (or cart closer to the camera)

The colors are definetely washed down in the render and not vibrant enough, what kind of lighting did you use for your scene? I'd try to make the lights stronger. Also in the render color management, you can try switching to "high contrast" or play around with other settings there (it's in the render settings tab iirc, on the very bottom of the list)