Hear their offer, ask all the questions and doubts that I have in the moment, check the Contract, ask a lawyer to properly understand the Contract, ask ex-employees or other artists that have heard of them or worked with them, investigate the Company on my own, debate, then come up with my answer.
I've been approached several times by Latinamerican "Editorials" that tried to create original content but besides I knew the end result of that by just checking how new and informal the staff were, I still gave it a shot, just making sure there were no loses on my end. Most of the time it was for finished works so its not like I had to put on a lot of effort.
The only time I really took my time was when Webtoon Latam approached me to pitch to them a series for Webtoon Latam, focusing on Gen Z and latinamerican culture, I obviously got rejected yet I'm quite thankful for that considering how demanding they are with deadlines and standards, the underpayment of Latam originals, creative limitations, sticking to their formula and so on.
I pitched it mostly to see what would happen, I wasn't surprised and expectations dried quite easily after a few exchanges I realized they didn't read my pitch, mostly because they kept confusing it with a series I work for but that I don't even publish, and how they totally mistook the genre of the series and topics it was about.