If you wanted to make interesting and more detailed effects of lens flares use this ! Custom Lens Flare VFX in Visual Effects - UE Marketplace
Overview: ▼[UE4] Marketplace - Custom Lens Flare VFX:Overview (outdated ) - YouTube
Tutorial : ▼[UE4] Marketplace - Custom Lens Flare VFX:Tutorial (outdated ) - YouTube
Some examples :
If you have any problems or questions, you can ask here