Hi,
You need to write a statement to go along with your application. It needs to prove to a judge that you are owed money or that you are a creditor. You also need to prove the amount owed. You should try to give as much proof to a judge that these a55holes (Alpha) are refusing to pay.
Here is a complete Winding Up Petition
1) Comp 1 Form anonymised
2) Comp 2 Form anonymised
3) Statement in support of Winding Up Petition anonymised
Can be downloaded from this drive
https://drive.google.com/drive/folders/0BxHM4VldA-BGODZ2UkREZWNPWkEThe file is also attached to this post.
Disclaimer: I am not a lawyer or giving u advice or making you do anything. If u want a 100% surety, get a lawyer.