DIY Frustration

I spent 4 - 5 hours tonight working on a DIY project for the wedding - it involved printing, cutting, and corner fancy-ing (not rounding but a more detailed design).  I printed on cardstock - which required feeding individually in the printer - time consuming but not a huge deal.  I printed at my friend Laura's so we chatted.  I got home and cut them all - and noticed that some were not exactly centered.  I decided, it's a small thing for the reception, looks good enough.  I then set out to fancy the corners.  I've used the tool before and it's actually tricky to get it perfectly in the corner - so this was the most frustrating part and a number of them weren't quite in the corner.  Some were thrown out, some were put in the "only if we run out" pile, and some were in the to-be-used pile.  I took the pile I had deemed acceptable to show James and ask about the corners, which weren't all perfect - his comment "what I really notice is that they aren't centered".  The man couldn't care less about half of the stuff I am doing, including if we use these, and he makes this comment.  So I get upset - having wasted my entire night working on them and being a bit frustrated by the corner tool - and throw them all away.  The cardstock wasn't too expensive so we didn't loose a ton of money but I literally wasted my entire Sunday night.  And I was excited about this little added touch that now I won't do.  I am not doing it all over again.  Of course I wanted them to look good but this whole time people have told me not to worry if everything isn't perfect, people won't notice/care.  The first time I go with that and leave something imperfect, I'm told it's not good enough.  Frustrating.