We need an Xaramin expert to complete the following tasks
1. Signature Capture on Android Device and storing in database
2. Select and storing a selected bluetooth printer
3. Transmission of captured signatures in a format which can be stored on a central SQL Database
4. Capturing photos or existing images and transmission to server with a given name format
Examples of previous work should be referenced to show your expertise.
Please quote for each of the projects and outline your approach and estimated time to complete the tasks.