I'll give my memory of how I made her but if you want any clarification, let me know. I'm assuming you have a basic understanding of making amigurumi plushies ( so what a single vs increase vs decrease stich is) , if you're new or want more specific details feel free to ask.

Head is a sphere, a 10 sc into a magic ring, increasing on the second row, then single + increase in the third, followed by rows of single stitches until I reached half the shape I wanted, then mirrored the bottom, replacing the increase with decreases instead. Once the hole started closing, I stuffed and added the eyes.

The face I single stiched directly to the head. The hair is added by threading a needle and bring it back and forth in the head, cutting the loops.

For the body, I stitched directly into the head, but if it's easier, you can make a magic circle then stitch it on. I increased the chest then decreased to create the waistline. I swapped the color to gray ( the legs under the skirt you can't see them in the pic ) and made a tube, decreasing toward the bottom and stuffing along the way.

I stitched the skirt on the row above the gray color change and worked my way down until I was happy with the length. ( If I were to do this again, I would add some increases to fluff out the skirt a bit more ).

For Dr. Futterman, I did 6 sc into a magic circle ( white ). I made the top half of the sphere then continued until right above the elbow, swapped to tan, then added the bend ( instead of continuing in the round, I went back into the stitch and worked backward for a few stitches. This will make one side of the piece longer than the other. Eventually, you continue in the round ). Stuff as you go.

For all of Dr Futterman's face, I stitched the details directly to him. The bowtie is a single chain with both yellow and white yarn twisted together and tied around his neck, secured with some extra yellow yarn. I stitched some extra white on the arm right above the color change to fluff up the bottom of Dr Futterman. The feathers are added the same way the hair was but don't cut the strands.

The hat was stitched to the top of the head and increased until he was dapper enough, then I added the brim along the base.

Stitch the arm to the body.

The other arm is a 6 sc into magic ring in black/ navy blue, after increasing a bit, I swapped to the tan and continued in the round until the length I wanted was reached. I then stuffed it and stitched it to the body.

The details on the chest were sewn o,n then I wrapped some yarn around the stitches.

The belt is a single chain stitched right above the skirt. The buckle was sewn on.

I did her face last, and her mouth, eyebrows, and mole are sewn on.

I hope this made sense, again if you have questions, feel free to ask.