Hey there!

So firstly, I'll say this; I like the change from stone to wood. It looks a lot better and brings out more colour on the plot. Now you can get started on detailing.
I'd advise you add some depth first, however. Your frame (The logs) you've built is on the same level as the wall - this can create some difficulty when it comes to detailing, as it ends up looking unnatural, and doesn't sit well on the structure. A simple frame is like this:
https://imgur.com/ONsoRxh
Use this as a guide to how your logs should be positioned with the planks.

You have some large, open areas on the walls where detailing is needed, otherwise it's just wood, to put it bluntly. You've got good detailing on the corners; I especially like what you've done with the spruce stairs.
(This part: https://imgur.com/qRtQHQY)
Have some similar detailing to this all around - avoid 'shelfing' and slab spam.
Shelfing is when you create a shelf-like appearance out of stairs/slabs. I can see it on your plot in some places.

It may also be nice to add some more colour to the plot, like you have in the spruce area I pictured, with the black behind the stairs. Use some coloured clay in a similar way, maybe :)
I'm not too sure what the exploding ball on the top is supposed to represent; I'm not sure if it's relevant entirely, and it may look nicer if you had a roof above the building.

Good luck!
- Dutty