Create a vector rectangle and colour it using layer styles. Please note that the select modify and feather options will only work in the same way if you are using the same settings for the size of the rectangle, canvas size and dpi settings. You can still use the same method but you will need to change the number of pixels to a higher or lower amount dependant on your settings.

Follow this simple video tutorial to create a dreamy effect with your photos.

Despite the bad spelling! .. this is a good technique for changing the colour of hair using layer masks.

Create this liquid blob effect in Photoshop with a combination of filters, channels & layers.

A really quick and easy effect. Good for use when trying to add text to a scary photo. Could also be created with a white background with light grey and blue colours to create an icy effect.

This tutorial shows how to create a vintage photo effect by adding a layer of texture accross the whole photograph.

A great easy to follow tutorial. First use the liquify filter ( filter > liquify) to stretch areas on the face, particularly arching the eye brows. A good tip is to try to make the face unsymetrical. After adding a layer of texture and aligning it with the photograph below, choose hard light from the layers panel drop down menu with the texture layer selected. Erase the unwanted areas and use the dodge and burn tools to highlight specific areas. A good tutorial for changing the eye colour can be found here: Zombie eye.

This video covers in a lot of detail the best ways to change the colour and tone of imagery. Desaturate with different areas of colour highlighted, by going to: Image > Adjustments > Channel Mixer. To change a photograph to Sepia tones: First Desaturate the image (Image > Adjustments > Desaturate) and then use the photo filter: Image > Adjustments > Photo Filter.

A photoshop video tutorial, showing how to decolorise part of an image by desaturating and then using the history brush to create the disired effect.

Desaturate images and use levels and layer styles to turn items into gold. This is quite a long tutorial but the effect is shown in the first few minutes, before going into greater detail on other items.