Putting up trim? We turned our garage into my bedroom and i bought this real...

We turned our garage into my bedroom and i bought this real pretty white trim near roses on it to go on the top of my wall.My "stepdad" be suppose to do it for me now he wont!I'm stupid when it comes to adjectives this.Does anyone know how me and my mother can put it up?He says i necessitate a nail gun thats 200 $ (he know i dont have that) what almost liquid nail?Is there any style that i can do it that i wont destroy it???
thankfulness

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Answers:    do you mean approaching crown molding
you can use hand finish nail and a hammer
you will also want a nail-set to sink the nails

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home depot sell these nail guns near the compressor for 90 bucks, there are electric fastener guns, liquidnails is good but cut the hole on the extension small so you dont get it adjectives over the place. you can also use double sided tape if the trim isnt to hefty. is it wood. if its just rag you can use spray glue

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