This is absolutely gorgeous, in every possible way and I really mean it.

I love the way you made the gradient on the sky, it really seems to give off energy and the colours enhance the meaning to this piece nicely. Let me congratulate you for the wonderful job you did on the rocks, I'm impressed! The lighting on them is fantastic and the shading gives it a natural look that really draws my attention.
Another thing I love is the sunflower <3 The blending on the petals is lovely and it makes the sunflower stand out.

On to the critique part:

The fact that the lightest part of the sunflower is the same colour as the bird's toes makes them look flat and almost invisible Shade them so they get some volume

It's too late now, but for future drawings I'd suggest you flip the text "you love" and write it the other way up so it's easier to read the whole text at once. What I mean is to write the word "you" close to "things" instead of "love".

This is not a crit but a tip Maybe it would be useful to get some coloured gel pens. Especially white, golden and silver. They give neat refflective effects and you can use them to highlight some parts, like the contour of the bird due to the back light

Hope this was somewhat useful . As I said, a beautiful piece full of meaning! I'm glad I didn't miss out on this one . Keep it up! You're definitely improving!