Hi, I am PowerDag, and I'm going to help you upload saves today.
Let's begin.
1. Open "My Computer" and open your C drive.
2. Open "Program Files" folder.
3. Find the "Blockland" folder. (Tip: Program Files is in alphabetical order.)
4. Open Saves folder.
5. Open folder named after the map you made your build in.
6. Find your desired save file. (Tip: There are also images, these are not needed.)
7. Find a good uploader, like Mediafire, and upload the desired file, following setps 1 to 6.