One thing to keep in mind is that not all skins will be compatible with custom DPI settings so you may get some small issues with those.
of my skins work if you change that Dani.
As soon as you have a somewhat Graphically advanced startmenue it all goes to fk. Misalignment
Edit: I would say the Best way (Maybe the only way) Is to make them bigger in photoshop and re import them into Skinstudio for the whole blind to work properly.