What is the measurement of the actual planting space, measured from the house out to the inside edge of the new bed? And how much of that is under your roof overhang?

It’s hard to tell from the picture, but the bed looks kind of narrow. What do you intend to plant there?

I like the stones that you used. They are very attractive.

Where the "stones" touch the house, they are going to prevent siding from drying quickly enough. I'd bring the stone courses down until no longer touching siding. I actually would have left it at the original grade and just planted it.

I wouldn’t run the stone back to the siding. You can either eliminate the top row altogether, or leave off the last stone near the house and hide it with plants that obscure the missing stone. Assuming you have soil underneath the raised area, any plants you put in the bed will extend their roots down below the bed, so soil depth shouldn’t be an issue.

The bed doesn’t look very deep from front to back, so you’ll be limited on what you can plant in it. Shrubs need to be planted with their mature size in mind, and you need to leave space between the full grown plants and the house.

What did you plan on planting there?

Sorry, but the bed you've walled in will have constant problems--overhang and plants too close to the house, not to mention that you can't fill the bed because of the house siding. I'd remove the wall entirely and pull the bed out so the plants won't be under the overhang. At the right corner, you could use a small tree or large shrub limbed up like a tree and placed at least 10 ft from the house, swooping the bed out to include that tree/shrub.