If you don't fancy heading outdoors to capture the Autumn season you can re-create it in Photoshop in a few easy steps.
Open up your image in Photoshop, click the adjustment layer icon at the bottom of the layers palette and select Hue/Saturation. Make sure Colorize is selected then move the Hue slider to find a colour more associated with Autumn. You may be thinking the shot looks a little odd as all the image, including the parts that don't need to be altered, have changed and you'd be right, but by going to the Layer Blend Mode in the layers palette where it currently says 'Normal' and switching it to 'Hue', you can improve the shot. To completely fix it there's another step we have to take but first, boost the saturation of the shot to give the Autumn shade more warmth.
As we created an adjustment layer we can select it, and use the Paintbrush tool to remove the effect from all parts of the image apart from the leaves. So, make sure the Paintbrush is selected and have your foreground colour set to black then begin removing the Hue / Saturation adjustment from parts of the image it doesn't need to be applied to. You can adjust the size of the brush for small branches by right-clicking on the image and moving the Master Diameter slider to the left. If you remove any colour that should have stayed, switch the colour of your brush to white and paint it back in.