Aha, on OSX, you don't hold down control, you hold down command! Problem solved. Did another trial, and it came out better...until I decided to put in some sparks and use the star effect filter. Not sure if you can see the details, but here is a screen shot of what happens with that filter. First I get some error messages then this is what I have left after I dismiss the error messages.

@2-ton:
The layer numbers are correct - the number is the angle (in degrees from the horizontal axis) of the "spikes" generated by the Star Effects Filter. eg. if you set "spikes" to 4 when you run the filter, it will generate 4 layers with spikes at 45, 135, 225 and 315 degrees respectively.
These layers are usually automatically merged-down at the end of the script and the resulting layer renamed "Star Effect", but in this case something went wrong and the merge-down never happened.
You seem to have lost "layer45". This may be related to the error messages. What were those messages? Can you reproduce them?
Also you appear to have a layer (Layer #5) above the Star Effect layers. Was that layer there when you ran the filter? If so, that may have confused the script. I had this problem while Graechan was developing the script, ref:
viewtopic.php?f=9&t=11883&hilit=Star+Effect&start=50#p161219
You could try running the script again but make sure that the active layer (upon which you are invoking the Star Effect filter) is in fact the topmost layer in your image.

2-ton, I forgot about you having Mac, the commands are a bit different and I told you to press ctrl. instead of command. glad you got that solved.

I must look into this star effect filter, I don't think I have that one.

Jontait2...I will not have time to test it tonight, and I can't remember for sure, but layer 5 is probably the sparks brush that I ran the filter on, and I don't remember if I moved it up after the filter or not. I will check it out soon and see what happens and make note of the error messages.

Thank you Molly for your help on this topic.
Thank you Wallace for sharing your helpful videos
I made one trying your explanations. No good but I'll make some more background just in case my ability can improve.

I think that is very beautiful Issabells. KUDOs

You made a really good start Molly. It is a difficult tool to use. I suppose the answer is to find as many tutorials as possible and just keep doing them.

Thanks Eris, I am practicing now on a banner. I won't let that beast beat me.

That's the spirit Molly.