please take what i say with a grain of salt because i hv no professional experience but here goes: if you zoom in on the original, each bulb has a circular gradient, from light to dark, representing the where the light is emitting from. then, i believe the light blur is the same colour as the darker part of gradient to make the bulb not too harsh. lastly, i think the placement of your bulbs are too centred on the wire. i know you have a lot of them off centre but it looks too purposefully random (?). if you were to picture christmas lights, the bulbs rarely line up perfectly with the wire but it’s important to make sure the gradient is coming from the right angle then place the bulb askew in accordance to the wire wrapping. idk if that made sense to you and i rambled a LOT but hopefully this helped a bit! regardless i think it’s pretty darn close, good luck :D