Create a structure for your paper

 Ordinal numbers: first, second, third

First, I want to point out...
Second, I want to emphasize...
Third, I want to conclude...

Adverb ordinal numbers: firstly, secondly, thirdly

Firstly, I want to address the...
Secondly, I want to rule out...
Thirdly, I want to make a closing argument for...

Other structure words: Beginning

To begin with I want to mention...
At the outset
Foremost
Initially
Primarily
To start with

 Other structure words: Leading on

Furthermore I want to delve into...
Consequently
In addition to that
On top of that
Thus

Other structure words: Ending

Finally
In the end
Last but not least I want to point out that...
Lastly