The phrase "afterwards first" is not correct and does not make sense in written English.
It seems to be a contradiction, as "afterwards" implies something that comes later, while "first" indicates the beginning or the initial step.
Example: "Afterwards first, we will discuss the results of the experiment." (This is confusing and incorrect.)
Alternatives: "first and then" or "initially followed by".
Afterwards, First Minister Peter Robinson said the the prime minister was "absolutely clear" that there was no more room for manoeuvre on welfare reform.
Afterwards, first, sodium sulfide solution was added drop by drop to the zinc chloride solution, and then, an appropriate amount of 2-mercaptoethanol as a capping agent was added to the reaction medium to control the particle size of ZnS.
Two more top-class stops followed quickly afterwards, first from Natcho's rasping shot which was heading into the top corner, and then to deny Ryazantsev at his near post.
Afterwards, First Minister Peter Robinson confirmed the Executive wants a meeting with David Cameron to press him to deliver on previous financial commitments made to encourage the local parties to share power.
To refine this recognition and to properly detect the exact cell boundary, more sophisticated techniques are applied afterwards: First, the rectangular region of interest containing the stained cell is transformed into an adaptive color space [ 8], incorporating the Expectation Maximization (EM) algorithm [ 9, 10] for parameter estimation.
The up and down arrows denote the uplifts and subsidences immediately after the 2011 Tohoku-Oki earthquake (first arrow) and afterwards (second arrow), respectively.
Afterwards second strand synthesis was performed, adapters were ligated and the 7 tagged-libraries were pooled for sequencing.
Shortly afterwards, the first gunshots rang out over the city.
I had had a miscarriage a year earlier however, but afterwards our first child arrived without any problems.
Shortly afterwards, a first group of more than 350 children were released by armed groups.
Not too long afterwards, the first settlers were headed for Hebron.
