Topic on Talk:Rayman
There are already tables for the sections you have mentioned. For the proper layout of an article, go to the Sample Article section.
To add the box art to an article, go to the Files section and upload the picture. Make sure the file is properly named and in a valid before uploading it (ex. Game_Name_Coverart.png). The box art for most games can be found on Wikipedia. To use the picture, copy the file name (once it is uploaded) into the "cover" section of the Infobox (look at the sample article for an explanation).