Question about full backup without root - save dirs and apk

[zero0n3]

hi guys

i've followd the howto to use adb command to backup all my data on mac

first question : after a full backup of -shared, -all and -apk is it possible to restore only a particular apk?

second question : i've restored my entire backup with adb restore command
all done...but:
my personal directories or third-part program dirs wasn't backupped, like /sdcard/Camscanner or /sdcard/media
is it possible to bakcup all my personal dirs and then restore also them with adb bakcup/restore commands?

thanks
regards