Question

I do not know what I am supposed to do

Answer 1

Just put commas wherever needed 
HTH :)

Answer 2

Put in commas where they have to be put.

For example, in number 2 the sentence is The soft white fluffy kitten sat on the doorstep.

Say the sentence out loud.

You (I did) will find yourself pausing in certain spots. Those spots will be where the comma goes.

The soft, white, fluffy kitten sat on the doorstep.

You should be able to get the rest with this example.

Note, commas are also in front of FANBOYS. FANBOYS mean:

For
And
Nor
But
Or
Yet
So

Hope this helped, and please mark brainliest! :)