how to show custom item with custom texture (custom head texture) to my gUI

[Abrail]

hi, so i have checked old threads but they used skstuff or smth which was litrally 9years old and has stopped support (and it also does not support above 1.12) so i looked through examples and created this code here is at slot 0 a player head its name is Panda but the thin is i cant seem to add custom texture to it i am confused at this point any help is appreciated

[edit]: i want to use https://minecraft-heads.com/custom-heads/head/98312-panda dis head

command /a:
trigger:
set {_menu} to a new chest inventory with 1 row named "&aPets List"
set slot 0 of {_menu} to player head named "&cPanda" # Slots are numbered 0, 1, 2...

open {_menu} to player

 

[Abrail]

??

 

[Neelix_bear]

ill see if i can do this

 

[Abrail]

ill see if i can do this

i am glad to see a reply but i do not understand it sorry