Hi Sarah!
I sense what Rob and Graham are saying, but I’m not really seeing the tilt as a problem per se; to me it feels fairly natural.
To my eye it could use a tiny bit of cropping at the bottom and on the right.
I realize the forsythia’s beautiful yellow hues will tend to create warmth in the pic, but I feel the overall tones are a bit off balance, and maybe the contrast could be a bit stronger.
For the edit below, in PS I used color balance (-25 on the red, +20 toward the blue), bumped the contrast up by about 20, and used the levels adjuster to tame the highlights just a tad. And cropped slightly. I think the balance is better now and as an added bonus, the lovely blue in your eye is more appreciated.
I didn’t do it but I agree with Graham, the twig needs to go. 🙂