First of all; holy fricking bejesus, that's a lot of tulips
Of course the first thing I notice is the vast ocean of red tulips, which you've captured very nicely; the red and green really set each other off, and you've gotten a lovely mesh and mixture of the two, especially in the balancing of them. Then you have the yellow flower; which really stands out since it isn't a complimentary color to red, it gives it more of a HEY, standing out rather than something we often see together sort of notice.
I do have a few suggestions: first would be the placement. I like that it is off to the side; if it were in the middle it'd look far too planned and set up, however it's so far into right field, that I didn't even notice it the first glance, which I'd like to have.
Maybe if you had it a little further in, moved the frame a bit to the right capturing a little more in from the top and the side (but again not center), perhaps using the "rule of thirds" would've been a more sufficient placement.
Also on that, the focus of course is in the back, but there is a LOT of foreground that is blurred and quite distracting to be honest. Again, I think by having been closer to the foreground toward the middle, it could've possibly cut out the amount of unfocused foreground.
Other than those few things; it looks beautiful. I'd LOVE to see a field of tulips like this someday; I love the image of flowers blanketing an entire surface. It's very refreshing and relaxing to imagine. The angle which you captured this gives a feeling of sitting in the middle, but also that it goes on forever and ever, when really, this could only be a few feet of flowers and nothing more. But the image you've given us is infinite.
All in all; there is some room for improvement, but you've captured a very beautiful image. Good work
***please do not pay attention to the stars, the critique is in what I wrote.***