Creating a network diagram

[amathproblemthatneedsolve]

I have read Ted's guidelines and hopefully, this abides by them. Essentially the question is in the title. I'll specify what specifically I need help with.

From this data table below I need to create a network diagram. I am unsure whether my diagram is correct. (the data table is below). My attempted diagram < Link to "Most Viral Images" at imgur removed >

 

[Prof]

The diagram includes all the correct information related the tasks.

 

[Prof]

grammar correction!
The diagram includes all the correct information relating the tasks.

 

[Prof]

Your network diagram is right!