Probably would be good to provide dimensions, and which direction the door opens.

Best idea for small pantry spaces IMO is to get a closet company to help you design. Container store has some good organization products, as does ikea. I believe the container store will help you design as well.

If your door opens out, put a peg board or some hanging on the left wall. We have our fold up step stool in that space.

Kitchen Pegboard by Wall Control · More Info

Coastal Plantation · More Info

I would probably put shelves on the back and right side (looking in) and a peg board on the left to hold my broom and various other semi-flat things that can hang. You may prefer drawers to shelves or mix it up with drawers on the bottom and shelves on the top based on what you want to store in there. I would lay out my stuff by shelf/drawer to see what I need to store and what height each shelf should be.

It is 61 inches by 45.5 inches. The right side is 13 inches deep.

Shelves in an L-shape ... deep on the back wall, 12" on the side wall

Pegboard on the remaining /opposite wall

No drawers anywhere in this space, but baskets on some lower shelves

A shelf above the door

Out swinging door

How wide is the door opening? If it's 36", you can use a 30" door and recoup 6" of storage depth on that left side wall. A pair of swinging doors, instead of one door, will also reduce the "footprint" of the open door inside the pantry.