Hello, I will appreciate your help on this please: 
Need help to understand what I am doing wrong.

In developer intermediate section of trailhead
API Basics: Use bulk API challenge

Import Accounts Using Bulk API and Workbench
Using Bulk API and Workbench, import these account records (a CSV file).

This is what I tried in workbench:

Step 1:  /services/data/XX.0/jobs/ingest
Executed POST

Step 2: /services/data/XX.0/jobs/ingest/jobID/batches
Changed Headers Content-Type to text/csv
"/Users/ediz/Downloads/bulkv2hocdata.csv"
Executed PUT

Step3: /services/data/XX.0/jobs/ingest/jobID. 
In the request body, replaced the text with the following JSON text.
{
   "state" : "UploadComplete"
}

Executed PATCH