Does Pushing/pinching/pressing Nose into Certain Direction Can Change Shape?

Nasal compression devices to achieve a narrower appearance are completely ineffective for achieving permanent results. If you did not fracture your nasal cartilage, which would be painful, it is unlikely your manipulations led to permanent change. Hope this helps! Dr Joseph 

It is not really possible to change the shape of the nose by pressing on it. Actually, you can kind of irritate it if you press too much on it. Irreversible damage would be uncommon but if you are concerned, find a rhinoplasty specialist for consultation.