To put it bluntly, your photo is not clear. If the resolution of the picture was not large before, it would be useless to enlarge it later. Many people just can't understand this. That picture of you is just like that. Plus, whenever you shoot, it is possible that the picture quality will be poor due to jitter and insufficient exposure. I work in a photo agency, and many people have the same problem when taking wedding photos in the photo studio. However, as far as the general digital camera is concerned, it should look ok as a whole with such a large size and some special effects. If you want to be tall, you can consider looking for another photo with sufficient light, bright and no jitter.