Simple 2D Animation (Garden Illustration)

We need a 2D animation for a church performance.
It will playback on a big LED wall screen with resolution 1920 x 1080.

There will be physical props and real plants on the stage in certain layout, you can look at the attached sketch.
Hence the animation needs to blend in with the props and animate as background on the LED screen.

The illustrations for the garden, like trees, leaves, flowers and others cannot be too cartoony, they need to be as realistic as possible. You can find stock footage and tweak or enhance from there, or create new from scratch.

The entire garden needs to look with depth and layers.
Simple animation like moving of leaves or etc are needed once in every few minutes...
Also can add some insects or birds flying by... maybe can animate on separate layers so our video operator can play it once in every 10mins.
The animation will loop through out the whole night.

Here is the schedule:
1. First sketch by 26-28 August.
If you want to secure the deal fast you can show us your sketches first, by all means sketch and show me. If it suits what we want, we will award you immediately.

2. Colour and Animation by 1 September.

3. Changes and finish by 4 September, may need further adjustment after the rehearsal on 7 September.

Don't write long proposal and tell me your "stories", just go straight to the point by showing me what you had done (animation) before, or something similar to what we are looking for. You can propose similar stock footage and how you want to tweak from it. And lastly your timeline and fee.

Thank you.