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