Before submitting your paper, make sure you have:

• Read the journal’s instructions for authors, and checked and followed any instructions regarding data sets, ethics approval, or statements.
• Named all authors on the paper, and the online submission form.
• Referenced all material in the text clearly and thoroughly.
• Carefully checked data and included any supplemental data required by the journal.
• Declared any relevant competing interests to the journal.
• Obtained (written) permission to reuse any figures, tables, and data sets.
• Only submitted the paper to one journal at a time.

In the end, notify all the co-authors when you have submitted the paper.