I bought this punch too - HAD to have it LOL - I keep looking at it in my punch drawer so your post is very timely as I SHOULD use it instead of LOOKING at it LOL!!! Sue Nelson aka Susie B here on SCS has a wonderful knack of using border punches in ways that I could
never think of. Here are two cards of hers that use a Martha Stewart edge punch and even though it is NOT the same punch as what you have, you could use the trees punch in the same way.
Card #1 and
Card #2
Have a look thru Sue's gallery - she has tons of ideas!