Garden Design

Hello,
I'm looking for someone with garden/landscape design experience to design the back of my garden in UK.

I have done a sketch, not to scale! But have added measurements. The 5 question marks are where I need ideas.

1. Patio area, possibly circular?? approx space 400 x 400cm. May have a tree chair or hammock here
2. Path leading from lawn to shed and area 1. Current path is a narrow concrete strip. Ideas for path, could include shingle
3. and 4 are suggestions for Vegetable beds, not sure if they should be raised or not. Approx space is 300 x300 cm with space around them to tend to them.
5. How to transition from lawn to path and veg beds.

My style is natural, not too sculptured.
Thanks Louise