Prematurely freaking out about wide round nose 10 days after rhinoplasty? How do I 'mould' the shape post surgery? (Photo)

Yes, your nasal tip looks appropriately swollen for this far out of surgery.  I usually will start steroid injections to the tip and or supratip region at 8 to 10 days to push along the resolution of swelling and more importantly to help prevent scarring in these regions that can accentuate the appearance of fullness.Massaging has over the past 2 years become a valuable adjuvant, and I instruct my patients to apply gentle but firm pressure to those areas 10 times a day for 1 up to 3 minutes.

At 10 days postop you are still very early in the healing process. Swelling is still present throughout the nose and will continue to decrease over the ensuing weeks to months. From your preop photo, it does appear that you have medium thickness skin which is a known risk factor for persistent swelling in the postoperative period. I will typically recommend nasal taping in the initial postop period to aid in the resolution of swelling. I would make sure that you have consistent followup with your rhinoplasty specialist to monitor the nose for changes and address any concerns you have along the way. 

Swelling is a part of every rhinoplasty and this can take several weeks to begin to resolve.  You will not see your final result for up to 6 months.Be patient, sleep on extra pillows to keep your head above your heart at night, and see your surgeon every 4-6 weeks.  A series of properly matched photos taken over time will help you see the evolution of your result and will help you and your surgeon define when you have reached a healing plateau.  At that point if you are not happy you can consider a revision procedure.  In my practice I recommend waiting a full year before secondary rhinoplasty.