Thank you for your application! I would like to give you some tips on what you can do to increase your chances to get accepted.

Your old mill is a good start, you paid attention to make terrain in the whole area of the plot, and also made some interior of the house but both outside and inside looks a bit empty. You could try to make both terrrain and interior more detailed, add some handmade trees, some crates, a cart, a small garden with some vegetables, candles, plates, images....
Your house would be more interesting if you use double walls, place the wooden pillars in the first layer of the wall and fill in the wall at the second layer, will look more structured. Also a roof overhang would look good and another material for the roof.
I like your bridge, but I would like to see the lower side too. Next time you could post some more screenshots showning all the details you made. If you have any questions just ask here.

Aside of the themed builds you can improve your chances to get Artist by helping with >>jobs and plotbuilds<<. When you finished such a task for a Designer, remember to ask the Designer to give points to your application as described >>here<<.