When using VFX for wonder in your CG designs, consider the story and genre, use VFX sparingly and strategically, and experiment with different techniques and tools. The right VFX should fit your narrative, characters, and setting, and how they would affect the plot and the emotions of your audience. Too much VFX can overwhelm or distract your audience, so use it only when it serves a purpose and enhances the core elements like models, textures, lighting, and animation. There are many VFX techniques and tools available for CG designers, such as particle systems, fluid simulations, compositing, matte painting, motion tracking, etc., so explore different options to create unique effects that suit your vision and style. For example, particle systems can be used to create sparks, smoke or fire; fluid simulations can be used to create water, blood or slime; compositing can be used to blend different layers of images or animations; matte painting can be used to create backgrounds or landscapes; motion tracking can be used to match the movement of your VFX to your footage.