You already understood the meaning of dithering. That is already a big archievement. But to become a good tile artist you will need two additional skills: Light direction and color selection.
First about light direction: The key of good tile art is not drawing shapes with lines but drawing shapes with light and shadow. You can do this by imagining a light source (usually above and to the right or to the left) and drawing surfaces and lines facing the light source brighter than the rest and those away from the light source darker than the rest. I added a bright line to the lower and right edge of your bricks. Do you note how they look much more three-dimensional?
- Steinboden2.png (835 Bytes) Viewed 1156 times
Second about color selection: You used pure greyscale shades. The problem with greyscales is that they look boring and transport no atmosphere. By adding a tiny bit of color to shades of grey you can add a lot more "feeling" to your tiles. Here are two versions of the tile. I added a tiny bit of blue to one and a tiny bit of orange to the other using a graphic filter (When making real tiles I would have added more saturation to the darker shades than the brighter ones). Note how the blue one gives a cold, sinister feeling like the castle of a dark lord while the orange one seems warm and friendly like the castle of a beloved king.
- Steinboden3.png (3 KiB) Viewed 1156 times
I hope that this was helpful for you.
