1:35 forest camo panzer 4 MOC, how to build ?

I wanna build this; (BFV for reference) but idk how to go around doing it, should I buy a 1:28 panzer IV and use my COH PANZER IV instructions to build it? And how would I do the skirts

I wanna build this; (BFV for reference) but idk how to go around doing it, should I buy a 1:28 panzer IV and use my COH PANZER IV instructions to build it? And how would I do the skirts