From what I understand (correct me if I'm mistaken), I can do the following:

push param3
push param2
push param1
call func1

and then inside func1 I can access these params by doing this:

proc func1:
    push bp
    
    mov bp, sp

    mov ax, [bp+8] ; param1
    mov ax, [bp+6] ; param2
    mov ax, [bp+4] ; param3

endp

But what if instead of pushing just bp, I would've pushed more registers? or used pusha? how would this effect the parameter accessing. What is the logic behind this when looking at the stack?