Finally,when you complete soldering all the needed wires, find a box and put all in :)
Mine was only a prototype (I didnt even rename the buttons) and i will improve it by putting leds and linear potentiometer (crossfader type).
I will also use a nice and large project box.
To be able to use it as as virtual dj controller, download a software called ''rejoice'' , it is free.
Then you just need to assign the buttons as you want in virtual dj.
For e.g play/pause or sync or effects or whatever function you need.
Do the same for the potentiometers (use as crossfader or equalizer or even volume).