I ordered my engagement ring in january on layaway and it's almost paid off, just a few more payments to go

It's eng853 from moisco with a 6mm cushion and a 4-prong solstice head setting.

When my bf and I were deciding on a ring it seemed like a good choice but now that we're about a month away from paying it off I'm starting to get nervous. What if I made a bad choice? What was I thinking ordering something I can't really see a picture of ? I'm worried the parts I chose to put together will not look as nice as the original setting I guess. And since it's too late to change my mind I guess I was hoping for a little reassurance for my silly brain.

I know I'm just being a spazz, but I was hoping someone has a ring with a cushion in the solstice head so I could see what it looks like even if it's in another setting? I've only seen the stock images of the head on its own.

Thanks in advance to anyone who can put my crazy mind at ease. I don't know what's wrong with me, I wasn't nervous for a second planning my entire wedding the first time around

Edited to add: I'm also crazy worried that the 6mm it's going to look huge on my skinny little finger. My big knuckle makes my ring size 5.5 but at the bottom I'm sure it's more of a 4. So if anyone has any of that "don't worry, shrinkage will set in" kind of reassurance I'll happily take some of that too