OOP help

I thought before you could call a method you needed and instance of the type. I might be wrong but should your init_star be a function?
Also the instance name isn't needed within the method
This works but whether it's OOP I don't know...

Framework BRL.Basic
Import BRL.glmax2d
Import BRL.pngloader
Strict

'----------------------------------------------------------
' global variables

Const X_RES = 800, Y_RES = 600 : Int
Global star_list:Tlist = CreateList()


'----------------------------------------------------------
' define types

Type star

  Field x : Int
  Field y : Int
  Field speed : Int
  Method update_star()

    If speed = 1
      y :+ 2
    else
      y :+ 1
    endif

    If y > Y_RES y = y - Y_RES

  End method

  Method draw_star()

    SetBlend(SOLIDBLEND) ; SetColor(255,255,255)


      If speed = 1

        SetColor(255,255,255)
        Plot(x,y)

      Else

        Local star_bright = Rand(1,100)

        If star_bright < 11
          SetColor(255,255,255)
        else
          SetColor(128,128,128)
        endif

        Plot(x,y) 

      EndIf


  End method
  function init_star()

    Local loop : Int
  
    For loop = 1 To 75

      Local Astar:star = New star
      ListAddLast star_list,astar

      Astar.speed = 1
      If loop <= 50 Astar.speed = 0
      Astar.x = Rand(10,X_RES-10) ; Astar.y = Rand(10,Y_RES-10)  

    next

  End function


End Type

'----------------------------------------------------------

Graphics(X_RES,Y_RES,32,0)
HideMouse()
star.init_star()

Repeat

  Cls
  For Local astar:star = EachIn star_list
      astar.update_star
      astar.draw_star
  Next
flip
Until KeyHit(KEY_ESCAPE)