Hi Linda,
well.... I stumble over
nice looking...
beauty is in the eye of the beholder? 😉
you get all kind of "templates" on the net, which fit into the cases, but that wasn't your question, right?
for me, nice means simple, plain, clean.... what is the key visual of your movie? "a day in the zoo" could show the enterance, "white wedding" shows Billy Idol... oops, no, bride and bridegroom... so, what is telling the story of hte movie with a single frame? what is the title of the movie?
... just as an example, clean vs. .... "colorful"
have a look at movie posters or have a look in the iDVD templates to get inspired....
for the "tech inlet", what chapters, credits, used music etc I would use templates, search the net for jewel box inlets/cover....