Welcome mate,
plenty of aesthetics you can do if you want to spice up the astra long, although most of it will have to be sourced from Europe.
The long you've posted is done by steinmetz, be prepared to lose a few organs to pay for parts if you want to replicate it, but there are plenty of other tuning companies to choose from too.
Things you could change are: grille, headlights to angeleyes or devileyes, custom bonnet, skirts from any one of the tuning companies, lower it, corsa vxr indicator surrounds, tint the windows, colourcode the door mouldings, stubby antenna, custom stereo etc etc etc, once you start, you won't stop :P