Forwarding domains with .htaccess

I’m trying to forward one domain that leads to my DO droplet to another domain that also leads to the same droplet. I’ve done this in the past with a simple 301 redirect in an .htaccess file. But after adding this it still isn’t forwarding.

I’ve added the .htaccess file in the /var/www/html folder, should I try adding this further up the dir structure? Or is there a better or more suitable option to doing this?

The end result should take domain-one.com and forward it to domain-two.com instead.

I am running a ubuntu with lamp droplet by the way.