Rear extension drawings

Description

Hello
I need someone to help me design and draw the extension on the rear of this ground floor flat.Ground floor extension to a one bed garden flat to create 2nd bedroom (en-suite if possible) and open plan kitchen/living space.
This is the house https://www.rightmove.co.uk/properties/129310685
Attached is the floor plan
And the deliverables would need to be
Existing and proposed floor planSite planBlock plan Extension detail
If you can get this to me - thank you