More Art Déco but these being the actual pieces, not sketches. Love the colors. Charles Catteau, designer (1880-1966).

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Vase with blue, green, yellow and white decoration. Designed between 1920 and 1928. Made in 1928. Belgian. Earthenware. Charles Catteau, designer for Boch Frères. Attribution mark on the bottom. Image © 2020 Pamono GmbH. Fair use license. via https://www.pamono.com/vase-by-charles-catteau-for-boch-freres-1928
an-art-deco-crackle-glazed-vase-charles-catteau-for-boch-keramis-1st-half-20th-c-1 (1)
Vase with a crackle glaze with blue, aqua, yellow and white decoration. Art Deco. No date. Signed with attribution marks on the underside. Designed by Charles Catteau for Boch Kéramis. Image ROB MICHIELS AUCTIONS © 2020, Bruge. Fair use license. via https://www.rm-auctions.com/en/european–islamic-arts/14033-an-art-deco-crackle-glazed-vase-charles-catteau-for-boch-keramis-1st-half-20th-c?
a-set-of-3-charles-catteau-vases-inc-one-in-iznik-style-for-boch-keramis-1st-half-20th-c-1
Three vases, one in Iznik style. No date but probably 1920s-1930s. All with attribution marks on the underside. Designed by Charles Catteau for Boch Kéramis. Image ROB MICHIELS AUCTIONS © 2020, Bruges. Fair use license. via https://www.rm-auctions.com/en/european-ceramics/3820-a-set-of-3-charles-catteau-vases-inc-one-in-iznik-style-for-boch-keramis-1st-half-20th-c

Art Déco ceramics in brilliant hues designed by Charles Catteau who lived from 1880 to 1966. An industrial designer when industrial design meant something prettier than your computer mouse.

Monumental hand painted cache-pot. 1934.
Monumental hand painted cache-pot. 1934. Charles Catteau, designer for Boch Freres Keramis. Image © 2019 ChateauAntiques. Fair use license. via https://modernism.com/items/4155/decorative-objects-ceramics-other/8772-6376-charles-catteau-art-deco-cache-pot-boch
Hand painted vase. 1927.
Hand painted vase. 1927. Embossed with the number 782. Charles Catteau, designer for Boch Frères. Image © 2019 Pamono GmbH. Fair use license. via https://www.pamono.co.uk/large-art-deco-vase-by-charles-catteau-for-boch-freres-1927
"Elephants" vase with three elephants and stylized palm trees. Early 20th c.
“Elephants” vase with three elephants and stylized palm trees. Early 20th c. Charles Catteau, designer for Boch Frères. Image © decorobject.com. Fair use license. via https://decorobject.com/decorative-objects/vases/vases-home-decor-charles-catteau-for-boch-freres-art-deco-elephants-vase-early-20th-century-f/
Large wall dish with shimmering multicolored floral decoration."
Large wall dish with shimmering multicolored floral decoration. 20th c. Signed under the base “Keramis Made in Belgium” and numbered “D 2072” with a similar model shown on page 705 of Marc Pairon’s “Charles Catteau, Art Deco Ceramics, Made in Belgium.” Charles Catteau, designer. Image © Millon/millon.com. Fair use license. via http://www.millon.com/html/fiche.jsp?id=6780487&np=&lng=fr&npp=150&ordre=&aff=&r=