There are a few things you can do to change the pixels in Illustrator so that they are more points-like. The first is to use the Pixelate tool. This will create a series of points in the image, making it look like there are more pixels in the image. The second is to use the Marquee tool to make a selection around an area and then use the Polygonal tool to create a series of polygons around that selection. Finally, use the Stroke tool to add lines and shapes around these polygons.
