both are perfectionists in their own ways, so try not to over-analyze, over-worry or place too much pressure on yourself or your partner and trust that the project will turn out successful even if maybe it morphs throughout the process from the exact vision you had when you started out.
I really appreciate this. I'm tempted to laminate it and entitle it "INFP Etiquette".Another several points that may be helpful to bear in mind:
1. Double-check what you assume is agreed upon, and what you believe the INFP is happy with. ENTJs can be so decisive, and so direct and outspoken, and INFPs so reflective and so harmonious and internal, that if the ENTJ doesn't hear any objection, he might assume that the INFP agrees and is on the same page. He may not be (either happy or on the same page) but he simply not have spoken up.
2. Remember that ENTJs tend to focus (quite successfully) on, and be motivated by, objective and strategic benefits (earning money, gaining victory, etc.). INFPs, on the other hand, are more often truly motivated by things less objective and strategic--things like deeply held values, personal devotion, harmony, making a difference in others' lives, etc.
3. Somewhat related to the above, you'll get the best out of an INFP if you treat him warmly--smile, be gentle and kind with him, ask how the people in his life are doing, care (or at least do your best impression of caring!).
4. ENTJs tend to be very good at managing time, and INFPs tend to be poor at doing so. Talk about this (1-on-1), preferably in a humorous way--and not by criticizing or being harsh. Instead, the two of you should just accept that time management is likely more your strength than his, and come up with ways (gentle and respectful) in which you can help him on time management for the good of the project.
5. For every critical thought or "shoot-down" of his ideas, give him two compliments, or find 2 good ideas to praise. ENTJs don't need a lot of praise and appreciation compared to what INFPs need. INFPs take criticism of their ideas personally, and if an INFP feels consistently criticized, he may shut down or suffer from burnout.
Okay, 'hope that's of help.