How could i change the text font for adobe photoshop if i already saved the file?

[Midknight_Mike]

Ok so i made a siganture for a website with adobe photoshop and i saved the file. But i want to make the text font bigger. I opened the file with photoshop again but it only show 1 layer and i can't change the font size. How can i make the font size bigger?

 

[Hemppy]

If you saved the signature in a format other than Photoshop (example: jpeg, ect.,) you can't edit it anymore. If you are not sure whether or not you want to change a Photoshop project, don't save it in another format...Save it in photoshop. It can always be changed later that way.