I have been on level 6 for a month lol
No you cannot skip.
Keep trying. One of the things about Angry Birds is it might look like you are doing the same moves, but there are tiny differences that could make all the difference you need. Also, there are sometimes more than one way to win a level. Look for other ways people have beat it on YouTube or something
Read today's blog post about apps.... for Barnes & Noble. If you go into the store and start Angry Birds it will allow you to use the Eagle which will then allow you to move to the next level. It appears that the Eagle is only available while in B&N (I hope that is incorrect) and it is only available for use once an hour.