You would be best to edit the original picture outside of Photobucket to resize the picture. When doing so, make sure you keep the dimensions in the same proportion as the original photo ... most programmes have a box to tick to do so or an option that does the same job.
Looking at your photo, it is stretched on the width .... out of proportion to the original. I imagine photobucket will have a tick box to keep in proportion but I do not know that site too well.
I will grab a copy and play with it for you. Check your email for a few new pics. Oh, also check your post and see the use of the
code that displays the picture on here rather than just the link.