thank you my concern was using usps with a flat rate box and envelope iv got the general idea but sadly never sent CIM before its usually always western union or moneygram, i think i get the idea to get coloring book and just put money in an envelope tape it inside the coloring book, i watched several youtube videos on it now, its just the uncomfort of never having used a flat rate envelope before mainly, i guess you can just ask for the flat rate envelope and take it home to wrap i see that now, does anyone know if they can stick the address on after you go to a usps? or do i fill it out myself? i just didnt want to ask them in there post office on the spot and dont wright so good, but would love it if they could just stick a printed out address on after i take the envelope to the usps office, i dont have a printer and even thought about going to 1 of the places that print out a TO and FROM section rather then looking rediculous not knowing how to do its a real pain as i dont want to drawl attention to the fact im sending money and dont want them to suspect moneys in the envelope as i hear that some steal packages.. i just want it to go as smooth as possible using my first flat rate envelope, anyone know if i can just take the already sealed flat rate envelope after sealed to have them stick a address to and from on the package? or would i be better off filling it all out myself? and do i have to add the 4 digit zip plus 4 code as in several youtube videos iv seen so far? it would be great if they can just stick a printed out to and from sticker on when i go to the usps but wasnt sure if thats how it works or not. any help appreciated im probably the only person alive thats never used a flat rate envelope before but we all learn sometime and im looking forward to starting my first experience soon. please let me know if anyones used a flat rate envelope before as the first times a bit uncomfy