Giving a great blowjob is certainly important. That's why I talk about it so much and spend much of my life devoted to leading by example. Of course, these skills and ideas are transferable and hopefully mutual. That goes with out saying. Beyond that, there's the other side of the coin. As much as it's important to be a great giver of blowjobs (or any other kind of oral pleasure) it's also extremely valuable to be a great recipient. There are only a few things I'm going to hit on here, which don't go unduly into specifics, as those are up to the individuals, but they all warrant deference.
Hygiene is key. This doesn't mean that you always need to be absolutely fresh as a daisy, but stick to frequent showers and perhaps a little once-over if you think you're going to get a blowjob at the end of a long, hot day. Of course, there are people who like a variety of different levels of ripeness, but unless your blowjob giver specifies that they like your natural odors, make sure to lather up on a regular basis. While I'm not a circumcision partisan in the least, if you have a foreskin, remember to give it some extra attention. Cleanliness is next to godliness, or at least that's what they say.
In the same vein, knowing what your partner likes in terms of pubic region grooming is always a nice touch. Everyone has their own personal preference, and I certainly don't think anyone should be shaving, waxing or especially Nair-ing anything if they don't want to. That said, if you're indifferent and you know that your partner loves you silky smooth, why not take a little extra time once in a while? If you prefer the natural look, consider a little trimming. Again, different strokes for different folks, but it eliminates the likelihood of stopping the action to remove some organic dental floss, if you know what I mean.
I'm not going to get up on a soap box and talk about "dos" and "don'ts" regarding diet. If you're prone to that asparagus issue, maybe don't eat asparagus right before a blowjob, lest you leave a lingering flavour. They say to ease off cruciferous vegetables and to fill up on fruit like pineapples and berries. If you have recurring issues with strong flavour, give it a try, but you don't need to give yourself a canker sore from shoving chunk after chunk of pineapple into your mouth. There's also a fair amount of talk about red meat, smoking and not drinking enough water. Keeping things in moderation and hydrating is generally always good advice, but your mileage may vary. There's no magical way to make cum taste like ice cream, but maybe something here might help.
Unless you're really into cum play, try and be open-minded as to where the cum ends up. If you really care, explain this to your partner ahead of time in a sexy, yet direct way. Don't just go for the face without prior discussion, since not everyone is into it. Especially if you're just starting out with someone, let them take the lead and allow the trust and comfort build. In due time, you'll be opening yourselves up to a whole world of places to come, and it will be amazing.
With these general rules of thumb, you'll be an ideal candidate for repeat blowjobs, which will no doubt get more enthusiastic, passionate and wonderful in time.
[This post is a part of Fleshbot's Camille Crimson Week.]