So if you are so sure about it, do it yourself. You are crossing the line into pushing a scam.
There are many things that can go wrong and I told you the correct way to do this type of trade is to have the fiat and currently already in place. That works and that is what the big players do. There are many problems with the way you propose this type of trade. It more likely to cost more BTC than you make.
i m doing that myself and sharing this if anyone need help
i thought there are good users here who sharing a lot with world so i posted this here
but i never knew it before that there are stupid people also here who just shit everywhere