He told Sky Sports News: "I'm kind of lost for words here. It was a great day. I played decently, hit my driver a lot better, just didn't get my approaches as close as I wanted and didn't give myself enough opportunities to make birdies.
"Overall a decent round and when you shoot under par at Augusta National on a Sunday, you should be pretty happy.
"Bubba Watson played better, I got beat and he deserves to win. I congratulate him for that but I learned a lot today and have a lot more new experiences and can't wait to come back."
Blixt was competing in just the third Major of his career.