hi

pls any one can give me an idea how to sculpted round cake to make football stadium cake

Stadium cakes are the most time intensive, most expensive cakes I do.  Start out by getting all the reference material you can.  Internet pictures from multiple angles, even Google satellite images will be a great help.  I have even bought Danbury / Franklin Mint "statues" of the stadiums to get more detail.  Here's a time lapse of a Denny Bryant Stadium I did a couple of years ago.

Well done!! What a lot of work. I've never made one of those and have secretly dreaded getting an order for one. hahaha!

Thanks!  That certainly wasn't my first one!  I kept track of the time I put into that cake and it was over 40 hours!  It was one of those cakes that I was still trying to decorate as we walked out the door to deliver it!