Ok.

.

.

Now you've done that, you usually have to SEAL the edge of the cut hole

- or moisture creeps in affecting the EL material.

Test the thing still lights up first, as you may have created tiny short circuits at the edge of the cut hole.

A Hole punch isn't the sharpest thing out there.

'Cut Sheet' EL I've seen in the past has suggested using clear nail-varnish, though I have no way of telling if that is suitable for SpeedHut material

Paul