ADD: This is accidentally made for Photoshop, Paint.NET hasn't suggested adjustment layers.
Remove the whitening under the text or have it everywhere, the background should be the same. Now you underline "This is inserted".
You have already detoriated the text quite well. No more suggestions about it.
But the color! It must fit better. Try this:
The text isn't visible at all as a layer. It's placed as white on black to layer masks of adjustment layers. Curves layer increases contrast and Hue&Saturation layer colorizes to brown. The mask is blurred in Hue&Saturation layer to make some spread. The same can be achieved also with layer style Outer Glow if it's applied to normal text layer.
You can take layer mask onscreen for edits (=for pasting in place here) by clicking the layer mask ícon and pressing Alt at the same time.
Here's another view which shows the curves layer: