Bullpup or not to bullpup

[britplinker]

I have completed my tune of the qb78d an am now ready to tweak the overall appearance of this fascinating chinese shooter.
i have also gone bulk fill finally but bottle mounting is problematic with standard stock...i have a paintball set up like one in pic so am thinking
 to bullpup the bad boy but am confused about trigger linkage...the only info i can find is bewildering at best.....can anyone tell me how its done.....pretend im a 2 year old.

dont want anything fancy first time round but would like to end up with something along these lines (see pic)