Part Payment

Hello, 

There is a delay in uploading/posting the computer game that is being made for me onto one of the platforms. This is on my end. I needed an account and there is a delay in it being opened. 

Is it possible for me to make a part payment before the entire project is completed?

I do not feel it is fair that the programmer has to wait to be paid as the time delay is on my end.

Thank you,

Cynthia