Blender work for Toy World trailer

Need to Work with the Toy World Trailer.
Hero character turns into a Toy and the Toys were attacking him and he was escaping from them and running to acheive his goal to become normal again.
key areas to work:
1. Dinosaur Attack: Live action mix.
in a 3d Environment(house model) hero is running and Dinosaur is running behind him.
we want 3-4 sec footage, want the footage to be blended nicely with the footage
Dinosaur Running: hero character running and Dinosaur Running behind him. Scene should be very realistic.
Lighting and rendering should be done very nicely. camera should be shaky as if it was Hand held 3-5 sec footage
2. Eagle Attack: Hero character Running Eagle is Attacking, I can share the reference link and shot and want to the achieve the same Shot( we have to discuss about this) 4-8 sec
3. Hero character Junming and animated 3d model compositing in the Environment.
4. Snake Hissing with a little movement( we provide a picture of the snanke and the toungue hissing should be done.