Welcome to SBB!
I did some searches in the forums here for you.
Here are 2 good ones I found when I searched crumpled:
http://scrapbook-bytes.com/chat/show...light=crumpled
http://scrapbook-bytes.com/chat/show...light=crumpled
Here are 2 good ones for inked:
http://scrapbook-bytes.com/chat/show...ighlight=inked
http://scrapbook-bytes.com/chat/show...ighlight=inked
For torn edges try
http://digitalpapertearing.com/index.htm
these are png files- not actions
(many different ones to choose from- even hearts)
I believe that atomic cupcake does work with PSE4, but not positive.
Try searching the tutorial link above too- great stuff there!
HTH