Pretty nice but some color choices feel off
The design of the dragon head looks Godzilla 1998 inspired and it does look cool overall. But you should work on your blood it looks like he flew through a paint factory. Also the tongue should be a darker shade of blue unless his tongue is suppose to be shiny for composition purposes.
I think it would be more effective if you added some stylized white colors to the background. It would retain the mood where as other colors like pink and orange wouldn't. And your dragon wouldn't feel as though he blends into the background.
4/5