You should then point out the importance of the study and point out how it relates to the field.
You can also point out how your findings can be used by readers, pointing out the benefits. Even if you did not manage to reject the null, there is always a reason for this, and something has been learned.
What Were the Shortcomings?
Whilst writing the conclusion, you should highlight any deficiencies in your methods, explaining how they may have affected your results.
This will allow the next researcher to refine the methodology and learn from your mistakes, one of the foundations of the scientific process.
Has Your Research Left Some Unanswered Questions?
Do your findings open up any suggestions for future research?
For a shorter paper, this is not always essential, but you can highlight any possible areas of interest and give some ideas for those following.
Are My Results of Any Use in the Real World?
Again, this is not always applicable, but you can suggest any practical uses for your findings.
For example, if you uncovered a link between diet and the speed at which children learn, you could suggest a short plan for ensuring that children receive good nutrition.
With writing the conclusion finished, you are almost at the end of your research project.
All that remains is to perform the proof-reading and formatting, a little bit dull, but a sign that you are in the final stages.