maybe some different textures for the wood and stone? They look a bit too repetitive to me.
In the tutorial database of this site, there's a link to some sites that have a lot of free textures.
<a href="https://www.d2lodshop.com" rel="noopener noreferrer nofollow" class="giveMeEllipsisa" target="blank">D2lodshop</a>
<a href="https://www.gatcity.com/forum/forumdisplay.php?f=3" rel="noopener noreferrer nofollow" class="giveMeEllipsisa" target="blank">GAT City</a>
<a href="https://www.rhymbox.com" rel="noopener noreferrer nofollow" class="giveMeEllipsisa" target="blank">XMPP instant messaging</a>