Editing the appearance and optimizing the online store

There is an online store Texte caché; it is necessary to conduct its audit, if necessary - to correct defects (change the background, add pages..., in general, look with a professional look and give suggestions). It is necessary to add the display of the catalog of goods in the left block of the main page and correct the display of the photo (in the catalog the photo is severely cropped). It is also necessary to optimize it for search engines. Make proposals indicating the deadlines and cost.