Thank you. :) I drew it by memory  a couple years ago of a store I used to work in. Spent a good 4 years in front of that checkstand, so it's kind of engrained in my mind haha.

Thank you for tips! Working on a bigger project right now and all of these are a great learning experience for me. Very glad I was introduced to this awesome community.

You did a lot of work on this. :)

Though I think, you could reduce the colour count and maybe add some textures (especially on the shelves) and shading to make it look more plastic. Also the floor and (now quite flat) baskets would look better, if you would have determined a vanishing point and related all edges to it.