Adding Boolean Cuts and more details with Multi Cut tool to the beveled shapes.
Creating an emissive Material: I clamp the result to control it's brightness.
For the rotation blueprint, I added a Sequence node to make different parts of the prefab rotate on their own. I also added a Sin function with Time plus a random float to make the light flow up and down. To add more control, I put the attributes for the Point Light into the Construction Script, so that we can visualize the results without simulating.
Level Blueprints:
Setting Character Movement:
Setting up lighting:
The final render: