Is it possible to make my nose like this computer image I created and what would be necessary to make it so?

Although you have only provided one view of your nose in the photos, the images that you have created appear to be appropriate and realistic.  The definition that you have provided and the changes that you have provided are very likely obtainable.  Obviously, a thorough physical examination of your nose and a true consultation with computer imaging will provide you with an even better idea of the potential outcomes of your rhinoplasty. 

The key to ethnic rhinoplasty is to refine the nose whist still retaining the overall ethnicity of the patient. From the photos provided, it seems the changes you desire are moderate and realistic, with narrowing of the nasal base, and better definition of the dorsum and tip. One important factor to consider in ethnic rhinoplasty is the thickness of the skin. Thick skin noses will swell for a much longer period after surgery, and the changes made to the underlying cartilage will be less apparent through thicker skin.Consult with a surgeon who has had extensive experience with ethnic rhinoplasty.All the best, and best regards. 

You need to see several very experienced rhinoplasty surgeons who do a lot of ethnic rhinoplasty. Look at their before and after results in noses like yours and select a surgeon who has natural looking results and not the overdone look.