Are the changes I want done on my nose possible? I want the height lowered and nose shortened.

Click on the "Learn more" link, just below my response, or go here:
FacialSurgery.com/RealSelf/RealSelf_Lp568.html
I made a computer morph of your nose, and an animation of the morph, to show the changes that are possible for your nose in truly expert hands.I lowered the bump on the bridge, elevated the tip, and then brought the entire nose back closer to your face. I also added some to the strength of your chin. Adding strength to the chin makes the nose look even better, and it's a very safe procedure.The photos you posted weren't ideal for showing the width of your tip, but I posted a short video with this answer of a woman who had the tip of her nose narrowed in a rhinoplasty operation.
See if you think the morph captured what you're looking for.
You should understand that the changes I demonstrated in the morph require advanced techniques, techniques that most plastic surgeons cannot handle.  Be sure to read the section in the "Learn more" link on how to stay out of trouble while searching for a rhinoplasty surgeon. Rhinoplasty is an exquisitely difficult operation to get right, and you should only have surgery if you are able to make yourself very confident in your surgeon's skills. Read that page very carefully. Most plastic surgeons are quite poor at this operation, and I believe my advice will go a long way toward keeping you safe. For most noses, it's better to not have surgery than to have inexpertly-performed surgery.
I'd love to hear what you think of the morph. Did it seem to address your main concerns? I could modify the morph to your taste if you wish.
Your nose is also a good example of why computer imaging is mandatory in rhinoplasty. You need to know exactly what the surgeon is planning to accomplish -- what features he thinks he can change, and by how much he thinks he can change them. When you see his goals, you'll know whether he has an eye for an attractive nose, and whether he shares your opinion of what constitutes an attractive nose. You'll also know whether the changes he proposes are enough to be meaningful to you, and whether he understands your wishes enough to address all of your priorities. How would you ever get that figured out without the morphs?! But remember, you're not hiring him for his skills with the computer. The doctor must then show you his before and after photos to prove that he can actually accomplish what he draws on the computer.
In your case in particular, you need to find a surgeon who understands all of the issues I mentioned, and how they fit together, and who can actually accomplish them in surgery. 

Your morphed photos appear reasonable, except your bridge may appear a bit too narrow on front view than an actual surgical result. Wishing you well choosing a specialist! Dr Joseph