Previewing your work in Blender is crucial for ensuring that your 3D models and animations look the way you intend them to. Here are some tips for effectively previewing your work in Blender:

1. Use the Camera View: To preview your scene as it will appear in the final render, make sure to use the camera view. You can switch to the camera view by pressing '0' on the number pad.

2. Adjusting the Viewport Shading: Blender offers different viewport shading options such as Wireframe, Solid, Material Preview, and Rendered. These options allow you to see your work in different levels of detail and realism. You can switch between these options by using the dropdown menu at the top right of the 3D viewport.

3. Real-time Rendering: Blender has a real-time rendering engine called Eevee, which allows you to see the changes in your scene in real time. This can be very helpful for making quick adjustments and seeing the effects immediately.

4. Using the Render Preview: You can use the Render Preview feature to see a low-resolution version of your final render. This can be especially helpful for checking lighting, materials, and composition.

5. Setting up Multiple Views: Blender allows you to set up multiple views in the 3D viewport, which can be very useful for comparing different angles and aspects of your scene.

6. Using the Animation Playback: If you are working on an animation, you can use the animation playback controls to preview your animation in real time. This allows you to identify any issues with timing or movement.

7. Use the Viewport Overlays: Blender offers several viewport overlays such as grid, outlines, and measurement guides. These overlays can help you to better understand the spatial orientation and scale of your scene.

By using these features and techniques, you can effectively preview your work in Blender, which will ultimately help you create more polished and professional 3D models and animations.