I always spend a lot of time for an image editing even it is just a single small image for a button, sometimes, up to hours.
But when I finish and insert the image into use as a button rollover, the image always looks big and ugly (I use the original size of 120x25). I redesign the image to the size of 68x20 but it still looks big in the menu.. I read some site source code and their image size is 120x30 but it looks all good.

Could you shed some light on what I am doing ? Thanks