I think the lightning effect (spell) should be on her wand, not so far away. Great image!

Very nice colors, GL!

suggestions:
1) change the dinosaur to a medieval dragon or some creature same as the era of the lady
2) do a "lens flare" at her wand, or a lightning ray towards the dragon, some smoke

The angle of the shoulder is wonky in relation to her head, and her face is too bright for the light source behind her (notice the shadow is in front of her face...)

Your source link does not work.

Really........... beautiful it is...........

corrected source link. Thanks for letting me know.

Great ps work

Nice idea with shadow and subject. Perhaps lower her left shoulder a bit and make it less 'broad' looking. This might help the overall look.

SBS ?

sbs?
Other than that the girl on the floor seems flat..... it might be the background choice, can you find something smaller for a ground surface? the cracks are too big. Also her dress needs a bit of attention, while I understand fading out her spirit, i would suggest to make her actual body more solid to stand out.

The lighting on the face is inconsistent with the background you are using. You might try selecting the face, and going to Image>Adjustments>Selective Color>Whites, and try bringing down the white tones in the face to better match the rest of the head and neck...

thanks and corrected it.

The face still is noticeably lighter, with the sun shining DOWN from behind her.
Her hair and shoulders show NO lighting on them at all, while you have a VERY strong shadow coming off of the bottom of her dress, although the dress shows no corresponding shading away from the sun light source.

I'm sorry, but whatever corrections you've made have not helped the inconsistencies between the contest source, the woman's body and dress, and the background you've selected...In competitions like this, such inconsistencies will probably have a negative effect on your score.

Nice idea with thinking outside the box with the source, author!

Nice concept author, GL!