Bitmapped images are difficult to modify and to re-size as well as difficult to freely access objects individually. Reduction of image can result in interpolation or indiscriminate discarding of pixels. Can modify individual pixels or large groups of pixels. Require huge amounts of memory. Usually larger than a vector file, this means they should be compressed to store.
Data compression can shrink the size of the pixel data.
Another leading painting program you can use to edit and enhance photos is Corel Painter. Fashion Designers love Painter because it simulates natural mediums such as charcoals, chalks oils and acrylics to enhance their photographic images. Now that you have a better understanding of what each of these programs are and what they do, the next step is have a better understanding of how you should share and save your files. Each image created will need to be saved in a specific file format that is native to the application. Naming and saving in image along with the file format extension will make it easy for other users of the images to identify the type of drawing it is and what applications may be used to open it.