First..........Make a new canvas any size you want make it "BLACK"
Then select the marque tool "ROUND" from tools palette
And drag it in to a circle about this big
Then go to "FILTER"........"ARTISTIC"...................."PLA STIC WRAP"
And you get this
You can keep adding to the same image and get something like this
Or add a simple lens flare and have it look like this
Hope this helps..............
B