Ecommerce Website development and optimisation

Our ecommerce website for kids clothing requires further development and Search Engine ---------- ’s on a WordPress platform with a woocommerce ---------- requires further refining in order to look more professional and credible. Will require update to make user/customer navigation easier.
We would like it to appear on first page of google for a few keywords.
We would like an expert to guide us in term of the best design for our website.
If our instructions are unclear please clarify prior to application.
We prefer to work with a competent freelancer.
Fee is negotiable but we would like you to quote a no quibble figure for the whole job.