To work with multi clipping path, the first thing you will need is a photo editing program like photoshop.
If you use photoshop, you have to master the use of pen tool as manual use of pen tool is a must for path selection.
Apart from the pen tool, you also have to learn the automatic selectin tools that can select based upon the color. For selecting objects with sharp edges, you have to use feather tools so that the selection is smooth.
Now as the automatic selection tools works based on some parameters, you will need and in-depth knowledge of tolerance of these parameters. After you have acquired skills in the selection, not you can apply effect and color these paths.
So, you can see that, when you have no knowledge of photoshop, working with multi clipping path is hard. Also, if you have a lot of them to do, you may to be able to do it all yourself. Therefore, it is better to use a clipping path service like ours. This will definitely save your time and let you do other important job your business.