Step 2. Add a lower voice with the left hand moving note against note with the melody. The intervals should be major or minor 3rds or 6ths, perfect 5ths and perfect octaves. Parallel perfect intervals should be avoided.
Step 3. Repeat Step 1 with the left hand.
Step 4. Same as Step 2 but voices are inverted - the melody is in the left hand.
Here is a PDF file with this hymn tune for printing a MIDI file for listening.
NOTE: In every step play 3 correct repetitions in a row.
After you are done practicing, post your time and feedback to comments.