painting-nasturtium study

I love the colours in this and in your still life with lemons. Both paintings are very vibrant and pleasing. The only thing I can't understand is the shape to the right of the flowers. A beguiling mystery.

The shapes r the leaves with strong shadows,however the camera has distorted a little,also as I mentioned should be more green.Glad u like the colours and also in the lemons still-life.Thank you!