A baseline-to-baseline alignment would make more visual sense, which would leave the descender on the g hanging below the bottom of the logo/mark d.
Below is a detail of your logo. Why are the lines different weights?
In addition, when it comes to typographical marks, simple geometric shapes can’t necessarily be used without visual adjustments to compensate for optical illusions and areas of visual weight where various shapes join.
For example, take any well-designed typeface, like the one you’ve used to spell out Abbeam Designs. Notice how the thickness of the bowl outlines on the d, a, b, m and g decreases as they merge into the stem of the letters.
Now compare that to how you’ve constructed your d logo and how you haven’t made those visual adjustments to the bottom of the letter where the bowl connects into the stem. It creates this awkward little nick in the mark where the bowl abuts the heel of the mark. In addition, since it’s a rounded shape, the bowl would typically extend just a little bit below the baseline of the heel, which yours doesn’t.
You might want to do what I described above and exaggerate the nick by decreasing the thickness of the bowl as it merges into the stroke, decreasing the width of the heel, angling its left edge, and dropping the bottom of the bowl to just below the baseline. It’s difficult to explain in words, so see below.