Final Script review

Below is the my script as it stands. It’s not perfect by any stretch of the imagination. Does anyone have suggestions for tidying up the code, or what I may be doing wrong. Thanks

tell application "Finder"
	
	set volume_ to "G1"
	if (list disks) does not contain volume_ then
		mount volume "smb://graphics101/G1"
		--display dialog "volume is now mounted"
	else
		--display dialog "volume is already mounted"
	end if
	
end tell


tell application "Adobe InDesign CS6"
	activate
	
	set my_dialog_result to display dialog "Job Number?" default answer "" buttons {"Branded", "Generic", "cancel"} default button "Generic"
	
	set button_returned to the button returned of my_dialog_result
	set JobNum to the text returned of my_dialog_result
	
	set MyDestFolder to "G1:CentralPDFProofs:" & JobNum & ":"
	set MyArtPDF to "G1:CentralPDFProofs:" & JobNum & ":" & JobNum & "art.pdf"
	set MyBCPDF to "G1:CentralPDFProofs:" & JobNum & ":" & JobNum & "bc.pdf"
	set MySheetPDF to "G1:CentralPDFProofs:" & JobNum & ":" & JobNum & "sheet.pdf"
	
	try
		tell application "Finder"
			set MyJobFolder to (name of 1st folder of folder "G1:Art Department 2:Work Files2:" whose name begins with JobNum) as string
			set myDestFile to "G1:Art Department 2:Work Files2:" & MyJobFolder & ":" & JobNum & "proof.indd"
		end tell
	on error
		set my_lost_folder to display dialog "Crap, I can't find that folder. Should I put this in the PDF folder?"
		tell application "Finder"
			set MyJobFolder to (name of 1st folder of folder "G1:CentralPDFProofs:" whose name begins with JobNum) as string
			set myDestFile to "G1:CentralPDFProofs:" & MyJobFolder & ":" & JobNum & "proof.indd"
		end tell
	end try
	
	if button_returned = "branded" then
		open file "macintosh HD:Users:DAVID:Desktop:PDF-VIDS.indt"
	else
		open file "macintosh HD:Users:DAVID:Desktop:PDF-GENERIC.indt"
	end if
	
	tell document 1 to set view preferences's ruler origin to page origin
	set rulerOrigin to ruler origin of view preferences
	if rulerOrigin is not page origin then set ruler origin of view preferences to page origin --(spread origin/page origin/spine origin)
	
	
	tell page 1 of document 1
		set myBox to make rectangle with properties {geometric bounds:{0.1, 0.1, 4, 8.4}, stroke weight:"0"}
		tell myBox
			try
				place file MyArtPDF
			on error
				display dialog "ART missing"
			end try
		end tell
	end tell
	
	
	tell page 2 of document 1
		set myBox to make rectangle with properties {geometric bounds:{0.1, 8.6, 5, 16.9}, stroke weight:"0"}
		tell myBox
			try
				place file MyBCPDF
			on error
				display dialog "BC missing"
			end try
		end tell
	end tell
	
	tell page 3 of document 1
		set myBox to make rectangle with properties {geometric bounds:{0, 8.5, 11, 17}, stroke weight:"0"}
		tell myBox
			try
				place file MySheetPDF
				fit myBox given center content
			on error
				display dialog "SHEET missing"
			end try
			
		end tell
	end tell
	set MyDup to duplicate myBox to page 2 of document 1
	tell page 2 of document 1
		set geometric bounds of MyDup to {0, 8.5, 2.5, 11.125}
		move MyDup to {11.5, 5.5}
		set rotation angle of MyDup to 180
	end tell
	
	tell application "Adobe InDesign CS6"
		save document 1 to myDestFile
	end tell
	
end tell