Oh man, almost every time he posts he shows that video, how annoying 
You don't have to copypaste those line in your char:
this is Fighter Factory 3: (KFM .cns file)
Spoiler, click to toggle visibilty
1. Fighter Factory 3: http://mugenguild.com/forumx/index.php?topic=137126.0
2. Open the character that has the sparks you want.
3. Go to the sprite tab at the top of the interface. Click "save image", and then choose "all" and "okay."
4. Load up the character you want to place the sprites in.
5. Go to the sprite tab again and then press "add" and navigate to the sprites you just saved and select them. They will be placed in the new character's .sff.
then:
-do the animation in the .air file (with Fighter Factory);
-search for [State -2];
-search on the right column, there are AfterImage, AfterImageTime, etc. until you find Explod (look the image I put above): double right click on it and you'll get this:
[State 0, Explod]
type = Explod
trigger1 =
anim =
ID =
pos = 0,0
postype = p1 ;p2,front,back,left,right
facing = 1
vfacing = 1
bindtime = 1
vel = 0,0
accel = 0,0
random = 0,0
removetime = -2
pausemovetime = 0
scale = 1,1
sprpriority = 0
ontop = 0
shadow = 0,0,0
ownpal = 0
removeongethit = 0
;ignorehitpause =
;trans =
;persistent =
;supermove = 0
;pausemove = 0
This is the code you obtain double clicking Explod, but you have to complete and modify it, of course, right now it won't work.
And by the way, those are not guard sparks, guard sparks appear if your enemy in mugen blocks an attack that you coded in your char
(eg. standing light punch, see the hitdef and search for guardspark, then put s"N" where "N" is your anim number).
The code you want now is one of an explod.
I hope you try harder this time, and I hope you success! 
