Im not selling apples or strawberries or hardware, im offering development services, what proof would you want ? me making a video editing some line codes in notepad++ ? or compiling and decompiling AI ? Thats kindergarden stuff, these services i'll provide to any of my customers, and im offering the services first, not asking for payment like a whore first. If the customer is satisfied and likes my work, i'll get a compensation payment.
Just trying to get along here.