Removing inside engine cover on a class A motor home

Hello,

I just had an inspection done on my 2004 Tiffin Class A motor home and was told I had a lot pine cones on top of my Chevy workhorse engine and that they should be removed. The problem is I don't know how to remove the cover over the engine compartment with all the carpeting around it. Can anybody help me with this problem?

thanks!!
Kenny C.