I am so happy you stuck with this large and difficult piece, and your first???!!! I thought you said you had worked with CP before, that's why you opted to go this large...
Anyway... It is wonderful!
(and I already have it in my computer... yepee!!!) And I am also glad you found a good spot for your signature. I like it very much, it says "Ali created this", and blends without glare, which IMO is a very important detail...
The way you have used colour/light/darks works very well. I first look at the leaves, with soft planes going up and down, floating peacefully, but with a lot of presence. The colour passages on them and the highlights are great! Then the sparkling diamonds on the water, teasing with whatever may lie deeper...
I come to the flower, fully open. And even more symbolism, a bud patiently waiting in the dark - the certainty of more blooms coming in time.
Then the dark background, that goes back forever, and makes me feel I want to start the "trip" all over again!!!
You have taken someone else's photo, but the fact you picked it and made it your own says a lot. And you interpreted it in a unique way: Ali's way.
Very well done! I have never felt so inspired to say so much!
As for what's next, you will know. Take your time to look around (or in) and find the one. It's part of the process!