Modeling a Corona Virus with blender

Add a Ico Sphere with 4 Subdivisions.

Select some Faces and enable Individual Origins.

Extrude the selected faces.

Extrude a second time.

Scale the faces.

Add a Subdivision Modifier with at least 4 Subdivisions.

I did the above steps with a few more faces and duplicated the virus some times. Then I got the following scene.

For coloring the virus, I designed the following two materials.

After assigning the two materials to the virus and setting the world background to red I start the rendering process and got the following result.

Then after activating the Depth of Field option in the camera settings and rendering again, I got the final result with some unsharpness in foreground and background.