I drew this picture of a planet eclipsing the sun. Any thing wrong with it. Im going for the realistic look.
(http://www.2dadventure.com/ags/planet.gif)
depends on how realistic you want it
http://www.gsfc.nasa.gov/gsfc/spacesci/pictures/soho/eclipse.jpg
http://www.cosmo.kawabe.or.jp/people/yaji/astro_hs/eclipse.jpg
here are two images from the internet
Had a go at that second picture but changed the colour a little.
http://www.2dadventure.com/ags/planet22.gif
Although your second pic may look more real, the first one looks like alot more time was spent actually getting all the detail.
The second one looks like it's a 13n5 f!43r with a filled circle on top. Perhaps on the edges make some color of the planet showing, like on eriks second reference pic.