Never was there a truer saying than, "Better to be finished than perfect", lol!
Try and put the mistakes down to that big learning curve we're all on. Think positively about what (hopefully) you'll never do again.
BTW - this advice is from someone who the other day broke a needle switching from straight stitch to zig-zag
without changing the foot. I put in a new needle, threaded it up - and did exactly the same AGAIN! (I went for gold on the second attempt, as I actually managed to take a piece out of the plastic foot
).
Your husband will love it - just as he loves you.