Any chance you could post instructions & files for us to use your awesome "dock"?
Dock:
Dropbox - Photos - Simplify your life
Desktop Visualizer (free market app)
Icons: can use any, check my gallery (a mix of icons, wallpapers, and screenshots) for some that I've made:
beardedspoooon's deviantART gallery
Launcher: any that let's you resize and overlap widgets, I use ADW EX (paid version of ADW)
Use Desktop Visualizer to make a 4x1 widget. Tap the widget, select the dock for your image, none for the function, hit okay.
Use Desktop Visualizer to make your 2x2 shortcuts. Follow the steps, except that you'll be selecting different functions. Clear the name because you won't want text under your shortcuts.
Now the tricky part: resize your widgets to move them around the screen and overlap them. You just have to play with this to understand it.
I think that, in the screenshot, the icons ended up 2x1. LIke I said, you just have to play with it. Restart the launcher to get things to overlap correctly. The first widget you add ends up at the bottom of the stack when overlapping.