If you don't want to change the script file you need to follow a few simple rules:

1. Use the included base files as a starting point and place all GUI elements at the exact same positions as on the base files. The included PDF file contains all 3 main windows in vector.

2. Knobs need to be 40x40px (unlike the default skin where they are 40x30px).

You can use the included Knobman files and replace the layers with your own images. Knobman is a tool specially created for GUI designers. It simplifies the process of animating GUI controls such as knobs (hence the name Knobman). You can download Knobman here: http://www.g200kg.com/en/software/knobman.html

3. Faders need to be 24x102px (unchanged from the default GUI).

A Knobman file with the fader animation is also included in the pack.

4. Use the included Undo and Redo buttons or create your own based on the ones included in the pack.

5. Use the included VCO1Waves files or create your own based on the ones included in the pack.