Step by step demo of leather bag (with metal studs):

Materials used:

Verythin to sketch shape of bag.

Black marker base. Blocking out.

Light grey and white pastels.

Cotton squares and electrical eraser.

White Prisma for seam stitchings.

Brown marker for copper studs.

Yellow marker to make it lighter.

Black thin point marker.

Fur purse:

Materials used:

Light grey marker for under drawing.

 2 tones of beige marker base.

Light pastel coverage.

Electrical eraser.

Grey pastels for darker areas.

Prismas: Brown, grey.

Felt hat:

Materials used:

Black Verythin.

Brown or beige pastel.

Grey pastel and white pastels for shadow and light.

Brown Prisma for details.

Velvet purse:

Materials:

Verythin to draw shape.

Marker base, mix colors if needed. Let it dry.

Pastels: Grey, black and white.

Prismas: Black and white.

Blend.

This seems the most challenging texture, because of the somewhat dull but changing shine: Perhaps just pastels, without the marker base could work better.