How to make a big knife in my world?

All the synthetic routes of the sword drawn by My World are as follows:

Operating equipment: Dell laptop

Operating system: win 10

Operating procedure: my world

1, nameless knife puppet, as shown in the figure below:

2. Madam Dao (white scabbard), as shown in the following figure:

3. Tiangong, holding a hard sword, as shown in the figure below:

4. Repair the rusty knife (if it is broken), as shown in the following figure:

5. Sheath the rusty knife (if there is no scabbard), as shown in the following figure:

6. He Qian-deposit certificate, as shown in the figure below: