copying a tab from another workbook and paste into last page sheet of workbook

[jaik22]

   Sheets(1).Copy Before:=Workbooks( _
        "TESTING232.xlsm").Sheets(Sheets.Count).Offset(1)

I am copying the first tab of workbook 1, and trying to paste into workbook 2's last sheet.
I got something like that, but can't figure it out how to set up the last page. Is there any way to set up like that?

Thank you!