The colors look smudged add more dark values on the flowers and a bit more highlights took and cake and dark values also at the place where the character body meets the curtain

This is a very fun whimsical poster concept. The gesture of reaching woman looks good and is easily understood. Some initial feedback which hopefully may generate helpful design choices to consider… could you arrange some more of the lines throughout to directly point eye towards desired focal point? typically posters maximize readability of words and silhouettes at a distance by using a small number of distinct flat tones/ colors and simple clear shapes, so test whether you have achieved that by looking at screen from far away, and try old famous painters trick of squinting? in particular sleeve and background have very similar colors. The woman and cake occupy about similar amount of space which normally grants them sense of equal importance to artist’s message, is that desired result? consider if you can clarify her fingers and hand touching the rose, as this appears sketchy, and it is right at your desired center of attention. Have someone take a picture of your own hand doing this action and study it get a crystal clear simplification of hand in action. Maybe even study how disney characters show simplified hand doing this type of action. Ask people whether they think the drawn hand looks simple, clear and accurate after you have done this, as people are very sensitive to accuracy in drawn hands and facial features. consider if background curtains and colors are needed at all, personally it feels like it competes too much and distracts from the whimsical setting of woman and cake topper. i hope that helps.

This is already better than the first one. My eye goes directly to the cake, and the curtain frames it which makes it feel important.

Oh I really like it! I can see that you put a lot of efort in the details and composition so weel done (and the reflected light on the lady's arm). However, I can't really see where the light is comming from in this scene. Still a nice illustration, please keep drawing!