Hi blindfoldjump, sometimes dividing things into different solid chunks and then filleting the edges of each remaining piece can work well, see here:
http://moi3d.com/forum/index.php?webtag=MOI&msg=3859.2

If you want to make an indentation try some of these methods:
http://moi3d.com/forum/index.php?webtag=MOI&msg=3024.4
http://moi3d.com/forum/index.php?webtag=MOI&msg=4010.4
http://moi3d.com/forum/index.php?webtag=MOI&msg=3318.1
http://moi3d.com/forum/index.php?webtag=MOI&msg=4791.13

- Michael