I use Word.
Delineate the cutting edges with a line or two (maybe a box - see below) in very weak grey and guillotine by hand and fold along one of the lines.

Sometime I put two on an A4 sheet - that gives 1 & 3/4 of the width of the jewel case - fold to fit. if the text is too much I opt for one in the centre which makes for more cutting.

Just a thought but with the 1 & 3/4 wheeze you could fold the second instead of cutting and get 2 X (1 & 3/4) of real estate.

My printer does double-sided which makes for easier life, but you have to be careful with the artwork. Too much ink makes the second side bleed. My solutions are: heavier paper and print the less inky side first. Remembering to set "print double" is a chore and unsetting for the next type of printing too. Chore - not for the hassle - more for the annoyance when you forget.