I got it now I looked into both of the terms and have come to the conclusion that this is a present participle because the sentence is structured...
I have never heard terms such as past continuous tense or present participle.....my mind is reeling. I didn't know as much as I thought I did haha
After years of research, setting evaluation, character development, plot planning, and then ironing out the glitches I have finally begun writing...
Separate names with a comma.