New layer, blank black layer, filter -> Render -> Lens flare, choose 105mm prime. Place it in the middle of the layer. Then turn the lens flare brighter and take colors off. Then just simply press Ctrl + T. It lets you transform the layer in shape you want, make it really "thin". There you have the basics, then just edit it the way you like Tell me if you need more help !
New layer, blank black layer, filter -> Render -> Lens flare, choose 105mm prime. Place it in the middle of the layer. Then turn the lens flare brighter and take colors off. Then just simply press Ctrl + T. It lets you transform the layer in shape you want, make it really "thin". There you have the basics, then just edit it the way you like
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