Excellent photo with a strong visual impact. Negative black space works well. Looks like you may have added some noise on the lower pedals, stem, and background perhaps to accentuate the sharpness of the rest of the tulip. Some small specs on the top pedal could have been removed in advanced editing but doesn't detract much overall. Not sure the border helps either. It is hard to see on my monitor and I don't think it adds a whole lot. Great shot with excellent lighting too. Good luck.
Beautiful colors and great details. I like how the stem extends out of the bottom left corner and leads the eye up to off center of composition that has the soft orange & yellow hues of the tulip.