Can you stick plasticine to canvas?

Yes, you can stick plasticine to canvas, but it may not adhere very well over time. Plasticine is designed to be malleable and won't bond permanently to surfaces like canvas. For a more secure attachment, you might consider using an adhesive specifically designed for art projects, though this could alter the plasticine's texture and appearance. Additionally, the weight of the plasticine could affect the canvas over time.