I hate my face shape: asymmetrical face, big nose, weak chin. How can it be helped? (Photos)

Your nose could be improved with rhinoplasty, which would give permanent improvements in symmetry and shape. You can bring the pictures that you think would be flattering to your face and these can be discussed.  It takes special interest and study to understand the facial aesthetics to create a nose that is harmonious with your other features. Take the time to find the right facial plastic surgeon and ask them to create digital images of the nose they propose for you and discuss the cost.Fillers or an implant can improve your chin.Hope this helps.

I would recommend starting with a consultation with a board certified facial plastic surgeon that specializes in rhinoplasty surgery to discuss if rhinoplasty can address your concerns. 
I would recommend writing down the following questions before scheduling your consultation:
1. Are you unhappy with the tip of your nose? 
2. Do you feel that your nose is too wide? 
3. Do you want to make your nostrils smaller in appearance? 
4. Are you looking to decrease the general size of your nose?
I hope some of these questions will help you pinpoint what it is that you don't like about your nose.  Cost will vary due to various factors like anesthesia fees, facilities fees, etc. I wish you the best as you research your options when scheduling a rhinoplasty consultation.A chin implant can improve your chin projection.
Sincerely,
Philip J. Miller, MD, FACS Double Board Certified Facial Plastic Surgeon

Hello and thank you for your questions and photos. First of all, moderate asymmetry is natural and adds to our individuality and the uniqueness of our look. However, excess asymmetry can be a cause for concern — as it sounds like it is for you — but it doesn’t have to be. A specialist plastic surgeon can improve the symmetry of your face in a number of ways. A chin implant, for example, can provide more vertical symmetry, but you can also choose to have fillers to accomplish this. Secondarily, a rhinoplasty procedure can positively improve the appearance of your entire face, bringing your features into greater balance and harmony, without having more work done. Schedule an in-person consultation with a specialist plastic surgeon for a full exam and discussion of your ideal look. A course of treatment can then be planned for you. Good luck!