Why do I look like Avatar after my rhinoplasty? can I get my nostrils close or even back to how they use to look?

You need to have patience with your body as it begins to heal. The skin, bone and cartilage are all traumatized during surgery. Inflammation (swelling) is the normal response and will help your nose to heal and look beautiful in the end. Right now, concentrate on other things you like to do and let your nose and under eyes take the time to heal. It can take up a year for your final results. I hope this helps.
 

Swelling after rhinoplasty is the norm and your photos show what appears to be quite a bit of swelling.  This will gradually dissipate over several months.  You can expect the majority of the swelling to go down during the first 12 weeks and then gradual change over the first year to your final result.  It may be difficult to be patient but your results will continue to change over time.

Swelling is maximum after rhinoplasty 1 to 2 weeks after the operation. You'll see considerable change in the nose over the next few weeks.