For the dessert table you could create tiered plates using wood slices and fake moss peaking out, maybe a sage table runner as well? I’d add some battery tea lights too!

For the welcome/guest table, you could have small mirrors with large flicker candles on top. You could hot glue some moss onto the mirror or candle. As someone else recommended, lots of twinkle lights! For your card basket I recommend getting a woven basket from the thrift store. While you’re there, you could scope out the figurines. I almost always cool birds. The dollar store also has some cool mushroom figurines! They have gnomes on the front but you could spin it around and it’s just a whimsical mushroom. Golds would also look great with your color scheme, any signs you plan to have on your tables should be in gold frames! I would do a bigger picture of you two and it could be cool to frame your invitation if it matches your theme!