Creating the magazine advertisement

I have now started to create my magazine advertisement by using the software photoshop. I have selected a image which is suitable for the advert, with using photoshop i have to use a variety of techniques including, the magic wand tool to erase parts of the image that's not needed. The quick selection tool to erase small parts of images or text then replace them with a different colour or even a patterns. There may be more techniques used when completing the rest of the advert.