Elegant ceremony on a budget tips

Unfortunately I have expensive taste, but not much money. I like understated elegance in general and am planning on going very minimalistic for my wedding. DIY'ing the invites and some table signage too; no flowers, just greenery and candles. I also am getting some things from previous brides on Facebook Marketplace for decor and party favors.

As far as the event goes, I've hired a live musician to play during the ceremony and cocktail hour. What else could I do to make this a very chic event? I was wondering if I should do a slideshow of photos of us from childhood playing on a projector in the background on some hung fabric?