Here is the spider girl with her lines softened using color. Because MSpaint doesnt save custom colors and, as you notice, a color palete wasnt saved on the images themselves (although in the future I will have one for in-progress works), my options on how to add those lines was a bit limited.
The work shading spheres on the mage was put to use to make this little monster.
For the little ones I suggest you use right-click, copy, and then paste into Paint and just use the zoom tool to see the details exactly as I drew them. In the future I may use screencaps or enlarging to get bigger ones.
Enlarging would add details to fix and screencaps of zoomed-in images that are then cut down would work best, making each pixel a 4x4 or maybe 6x6 block of solid color in the enlarged version.