A couple of questions:
Ozaway and Stahthalo are neighbours? Because forests and deserts don't usually exist side by side.
Nurgalia: what do you mean by canyon city? A city in a canyon? A canyon usually means that there is a river and this will explain how it becomes a major hub.
Yutyran: little country, landlocked, surrounded by mountains: It cannot be very rich or popolated (unless it has important natural resources and a developed trade - think od Switzerland).
Where is the ocean? In the middle, surrounded by all the lands you named? Or on one side? Consider that the sea favors trade and communication; that huge landmasses tend to be arid at the centre; and that your arctic region will be more liveable if it is near the sea.
Madman
Ozaway and Stahthalo are probably not bordering neighbors, I only specified they are former allies.
With Nurgalia I say canyon because it's situated and was built in a large canyon.
I'd opt for the ocean to be around the landmasses much like our earth today. With that in mind I'd guess that Brilsea would be a coastal area where ships could easily be driven to.
I might even have Unzaila located in the poles, hence the frigid condition. With the arid conditions in mind that would likely mean Ozaway is more in the dead center of the current landmass.
Who Am I?
In my recent fantasy work I made several nations/countries but since I'm abyssmal at geography I need a bit of help designing how they all look on a map. I'll give a brief synopsis of each country to give a sense of where everything is.
Oznah:An opressive region where mad science and dark magic reign supreme.
Unzaila:An arctic region with a scattered population but might hold secrets.
Preshzin city: A central hub of sorts actling a melting pot of cultures and a major place of innovation.
Ozaway:A shady desert nation that is a former ally to stahthalo (A country I'll bring up later).
Nurgalia:A canyon city bordering Preshzin city and is a mjor hub of the black market.
Whirland Islands: An Archipelago ruled over by a Necropolis, waiting for the time to conquer.
Stahthalo:A forested area home to a peaceful nation heavily based on ancient China. They broke affiliation with Ozaway due to conflicting cultures.
Yutyran:Basically the shire, a cozy town hidden in the mountains and populated by the little folk.
Brilsea:A port city bordered by the sea, a common merchant area.
Ornala city: a large and well defended city that is much more strict with its law and culture than most.