how to change the flame strike model

[pineware31]

i made a version of the flamestrike2.mdl that makes the fire blue, cuz i want the fire to be blue, i tried replacing the models like everywhere all it does is remove it and make the ability not show a thing, can anyone help me? also whatever the fix is i hope it also works for the blizzard and starfall abilities

 

[A]mun]

Looks like the Megablast texture path is missing "Textures/" (Textures\MegaBlast.blp is the default).

But then you have some fiery flames around it, so you probably want a custom blueish one on that basis?!
Try these, haven't tested them ingame for now.
texture path is:
Textures\MegaBlastBlue.blp