This is milos' mask from a character I made a long time ago. The supplies I used were Tinker cad and a few shapes which were squares, triangles, cylinders, a drawing tool, and a doughnut shape. Plus a cone shape and octagon

Step 1: First Shape of Mask

first, grab one single cylinder and then another one and place it barely covering all of it.

Step 2: Shape of Mask

now with the second cylinder, you can find the transparent button by the coloring button click it an then drag over the two shapes and group them together

Step 3: Shaping the Mask

Next, get a ring shape and then turn it on its side as u make the with longer then place it where it rounds both of the edges.

Step 4: Cleaning Up Mask Parts

You can take other shapes and turn them transparent to remove the extra pieces.

Step 5: Making Mask Shape

then take what you have and stretch it higher for the face structure.

Step 6: Shaping the Mask

grab a ring to shape the mask's face structure and triangles to delete the extra then turn it transparent and group it.

Step 7: Shaping the Jaw of the Mask

take triangles and put them on both sides and make them transparent.

Step 8: Horns

take the squiggly shape and double click on it then make how ever you want your horns to look like then duplicate them.

Step 9: Doughnut Piece to Hold the Horns

tale the doughnut shape then grab a transparent square and put it halfway on the doughnut then drag over the items and group them. You should get a half doughnut.