uh, the point is to make a new layer underneath the render that is a color like hot pink. Use the pen tool.
to remove the white line.. try the following open you image in PS and with your magic wand click on the transparent area and once that is selected right click and do a " select reverse " its gonna select just the image, then go select>modify>contract and set it to 1 pixel and then right click again and do a layer copy.. the copy one would be the one without the lines.. hope that helps.. and save it as .png
yikes! take away the green layer, and save it as a .PNG it lokos alright, just blocky. Zoom in more to cut it in more detail