Default [Q] Making a custom stock ROM

I'd like to make a custom ROM based on the latest Sony FTF from here.
Can anyone link me a tutorial on this? I googled and searched XDA but I'm kinda afraid I'd mess it up coz none of them pertain to the current Xperia devices. I just want to start small: removing all the sony bloatware/apps (except the camera app) and packaging it to a zip file for flashing.

Thank you XDA community.
Nexus 7 FLO 32gb
(Paranoid Android | Franco Kernel)
Nexus 4 16gb
(Paranoid Android | Franco Kernel)
Xperia Z1 Compact
(Sony Stock .108 4.4.4 | Sony Stock Kernel | Rooted | UB | GravityBox)

My warranty has long been void