Composition Your subject is almost perfectly centered making this a less interesting composition than it could have been. Maybe if you found a bit of flowers that you could use a rule of thirds type approach, it would have jumped out more.
Color As others mentioned, it seems you had a bit too much sharpening/PS work here. I'm not sure if these are the natural colors, but they look very nice, almost oversaturated though.
Focus I find the infinite DoF to be less interesting here than if you limited your DoF and blurred the background around these two interesting flowers in front.
Subject matter Your subject and the area around it are both interesting and exciting to shoot, IMO. I like the texture on the leaves - it makes me want to touch this flower.
Overall The sharpness hurt your score, but I think you took a very beautiful flora shot. Congrats and good luck in the future.
Nice color mixing here, tulips are amazing colors and do well in any photo. I like the composition you have chosen with a deep DOF. I get the feeling the first two tulips have been slightly oversharpened but it isn't degrading to the photo quality at all.
This shot is pretty good. The angle should've been pointed up just a little more so as to not cut so much of the succeeding row of flowers off at the top.
Great composition and "arrangement" of the tulips (which means point of view). The colors seem slilghtly washed out to me; perhaps with more interesting light, these colors and depth of these flowers would really pop. Good DOF.
feels like you sharpened a bit too much, maybe you didn't but this is my feeling, nice color. Compo: the 2 principal tulips are too much in the same row, hiding one another, a different view may have add more impact.
having the top band of tulips all the same makes a nice border/background, and doesn't detract from the importance of the forground tulips that are meant to hold our attention. I like all the vertical lines. The frame is very busy though - wish you could have pulled some of the tulips in the midground away.