Just make sure you can back everything up, have references that will vouch for you if they do ring up, and make sure if you have said you can do things, you really could do them if you were employed. if youve said you can do something really well and they find out you havent got a clue when they hire you,, well thats not good. That being said, you do need to sell yourself and I think EVERYONE exagerates on resumes. I once said I had experience training new staff when all I did was show them where to put their bag.