Hi, I want to add the text "PROCEED TO NEXT STEP" to msgbox

I tried to add 

& vbNewLine & "PROCEED TO NEXT STEP"
but I am not sure where to put it in the existing macro. tried different ways but unsuccessful 

Sub Save_As_PDF()
Dim ws As Worksheet, ws2 As Worksheet, pagetall As Integer
Dim filepath As String
Set ws = ThisWorkbook.Worksheets("Summary_Print")
Set ws2 = ThisWorkbook.Worksheets("UserPage")
pagetall = Application.WorksheetFunction.Ceiling(ws.UsedRange.Rows.Count / 33, 1)
With ws.PageSetup
        .PrintArea = ws.UsedRange.Address
        .PrintTitleRows = "$15:$16"
        .LeftMargin = Application.InchesToPoints(0.25)
        .RightMargin = Application.InchesToPoints(0.25)
        .TopMargin = Application.InchesToPoints(0.5)
        .BottomMargin = Application.InchesToPoints(0.5)
        .HeaderMargin = Application.InchesToPoints(0.25)
        .FooterMargin = Application.InchesToPoints(0.25)
        .Orientation = xlLandscape
        .PaperSize = xlPaperA4
        .FitToPagesWide = 1
        .FitToPagesTall = pagetall
End With
filepath = ws2.Range("B199") & "\" & ws2.Range("B200") & ".PDF"
ws.UsedRange.ExportAsFixedFormat Type:=xlTypePDF, _
    filename:=filepath
    MsgBox "PDF file has been created: " _
      & vbCrLf _
      & filepath
      
      

exitHandler:
    Exit Sub
errHandler:
    MsgBox "Could not create PDF file"
    Resume exitHandler
End Sub