Basically I'm paying someone to master my home recorded record but as the title suggests it's my first time getting a master done so I don't know what to ask for, request, etc. besides song spacing/how they flow into each other. I also just watched a video where a guy said that you shouldn't have any compression on your track before it gets mastered because they add that. I added compression on just the vocal tracks and reverb on the entire track but that's about it... is that going to be a problem? But yes are there any specific things which I should ask. Finally, the person charges a flat rat per hour but then there are optional upcharges for disc audio verification, DDP master, and MP3 encoding. I don't know what any of these mean, could someone explain them to me and whether or not I would be interested in them? Thanks for your help for a newb when it comes to mastering.