for the raised areas in the headliner use 1/4 in padding from a padded top ,you can get it at any interrior shop . it is a semi hard type of foam . cut your design out of it and glue it to your headliner board , then cover the headliner complete over it . its not that hard to do . make sure you get good glue not that crap at a parts store . buy it from the interrior shop you are buying the material from , and spray it thru a old spray gun ( not dads new hvlp sata) . and spray glue on the headliner ,and the material and let it set till tacky then put it toegether , don do it all at once ,fold the material in half and do it half at a time .
hope that helps
kenny