Conclusion transition words work well to clarify your arguments.
Use
To conclude the ideas that have been previously mentioned.
All things considered
Altogether
as a final point
As demonstrated above
As noted
As shown above
As you can see
at last
Briefly
By and large
eventually
finally
Generally speaking
Given these points
In a word
In any event
In brief
In conclusion
In essence
In short
In summary
In the end
In the final analysis
last but not least
lastly
On the whole
Overall
Therefore
to conclude (with)
To end
To sum up
To summarise
Ultimately
Usually