Well I think most has been mentioned here. However, you say you like to make things look perfect? Sounds to me like you're aiming for beauty/glamour retouching and if that's the case, here is what i would have done:
1. Make eye-brows thicker, more interesting.
2. Eyes look flat. They need to look "round" and "pop".
3. Way too dark around the lashes and lashes themselves need new shape making the eyes more appealing.
4. Make lips bigger by using shadow technique or take it a step further and do some plastic surgery.
5. Add more clarity to the cheek lines and use less blur + more texture. Some wrinkles shouldn't be removed, just softened so you keep the personality of the model.
6. Make shoulder-line more visible (use shadow technique) - effectively giving a more feminine look. I find neck+shoulder line one of the hardest things to manipulate since that's what makes a lady more or less feminine. Be careful retouching those areas.
Check out
http://www.peachpit.com/articles/art...01733&seqNum=4 which gives a good start!