First of all, you don't "need" anything. The real question, is what bothers you the most. You have mentioned your nasolabial folds, and your lower lids/tear trough. Once we have identified the issues you are concerned about, we can address them.
As for your nasolabial folds, yes they can be addressed with fillers such as Juvederm. In your case, I would recommend re-volumizing your malar area. By filling in this area just a bit, it will help return the youthful heart-shaped shape to your face, and help reduce the depth to your nasolabial folds. I would only use a very minimal amount of filler in your actual nasolabial folds - just enough to break it up. A completely filled in nasolabial fold is unnatural, and comes across as such. As for your lower lids/tear trough, I would have to examine you to adequately examine the pathology. From your picture, it appears like your could benefit from some fat or filler being placed in your tear trough. It doesn't appear like you have much excess skin in your lower lids. Any minimal excess skin you do have here would become taught when this area was filled with some fat or filler.
Overall, you could treat the areas that bother you by replacing the volume you have lost. You can either use fat from somewhere on your body like your abdomen, or a dermal filler like the Juvederm line of products.
You do have excess skin in your upper lids, but if they don't bother you, then leave them alone.
I hope this helps.
Asif Pirani, MD, FRCS(C)