How to overlay (images) widgets in Pyqt5?

Question

I am working on a project where I need to design a circular gauge which can rotate with animation(which I already achieved) but now I need to overlay an image under it here is my code(sorry its not properly identated also thanks in advance)

from PyQt5 import QtCore, QtGui, QtWidgets
class RotateMe(QtWidgets.QLabel):
  def _init_(self, *args, **kwargs):
    super(RotateMe, self)._init_(*args, **kwargs)
    self._pixmap = QtGui.QPixmap()
    self._animation = QtCore.QVariantAnimation(
        self,
        startValue=0.0,
        endValue=30.0,
        duration=1000,
        valueChanged=self.on_valueChanged
    )

def set_pixmap(self, pixmap):
    self._pixmap = pixmap
    self.setPixmap(self._pixmap)

def start_animation(self):
    if self._animation.state() != QtCore.QAbstractAnimation.Running:
        self._animation.start()

@QtCore.pyqtSlot(QtCore.QVariant)
def on_valueChanged(self, value):
    t = QtGui.QTransform()
    t.rotate(value)
    self.setPixmap(self._pixmap.transformed(t))
class Widget(QtWidgets.QWidget):
  def _init_(self, parent=None):
    super(Widget, self)._init_(parent)
    label = RotateMe(alignment=QtCore.Qt.AlignCenter)
    img_path = os.path.join('safari.png')
    label.set_pixmap(QtGui.QPixmap(img_path))
    label.resize(100,200)
    # label.setMaximumWidth(200)
    # label.setMaximumHeight(200)
    button = QtWidgets.QPushButton('Rotate')

    button.clicked.connect(label.start_animation)

    lay = QtWidgets.QVBoxLayout(self)
    lay.addWidget(label)
    lay.addWidget(button)


if __name__ == '_main_':
 import sys
 app = QtWidgets.QApplication(sys.argv)
 w = Widget()
 w.show()
 sys.exit(app.exec_())