Hey! Nice! Love the saturation really strong sense of colour.
I think you're a little unsure of your forms? so you've got a nice shadow on the ground, that will give you the direction of the light source - then add your AO, and start to 'wrap' your forms. I think going back and seeing the underlying forms (cylinders, boxes, cones) and throwing in your shadows will make a big difference. I feel like your colours are awesome nice and strong they just need some contrast re- shadow.
Also a neat trick is to lower the brightness of the background, it will make your lights brighter and give you better contrast to make it 'pop'.
I also changed the foot, I know you didnt ask about anatomy but I did.
Great work. Keep it coming.
Thanks for your advice. I was a bit stuck when learning about lighting, but now I can see what’s wrong and how to improve it. And thanks for the little correction on the anatomy – I hadn’t noticed the mistake.
Thanks again for your feedback.