Steps
Step 1
Cut the MDF board the length you wanted or ask Bunnings to cut it.
Prime the MDF boards and paint them.
I didn't paint the backsplash because I used wallpaper, but it was recommended to prime it before adding the wallpaper so that's what I did.

Step 2
Build the outer edge of the shelf. Make sure the corners are at a 90° angle.
Attach the outer edge to the backsplash. I used liquid nails first to make sure it stays in the right place, and then flat head nails to nail to attached it to the backsplash.

Step 3
I then added the right angle brackets under the shelves and added the shelves to the backsplash. I also added pine trims to the top of the shelves so it would look better, and secure the items so they don't fall down. I added a piece of timber to the bottom to balance the weight.

Step 4
Then I caulked the edges and gave a last touch with the paint. I never caulked before and it really makes the joints look better.
Then it was time to add wheels and lift it up. One final thing was to add a handle and I was ready to carry the rolling pantry to my kitchen.

More DIY @bohemianlivin