How to create watercolour effect?

Hi,

I've found this online and really like the look of it. What would be the best way to create this? I'm thinking creating the cup as a vector, then make it a compound paths and fill it with a watercolour texture image. Then rasterised the image, go into photoshop and use a filter effect to get the jagged edges. What do you think? Is there any other better way? Any input appreciated

Please help.

I didn't find the right solution from the Internet.

References:

http://www.graphicdesignforums.co.uk/threads/how-to-create-watercolour-effect.25003/

Brand Video Marketing

Thanks