Avoid a cluttered or chaotic composition; while vibrant and detailed, the central subjects (lemur and cocktail glass) should remain the focal point.
Refrain from overusing the graffiti elements; they should complement, not overpower the main subject.
Ensure that the lemur and cocktail glass don't appear disjointed or out of place; their intertwining should appear natural and fluid.
Avoid muted or subdued color choices; the piece should exude vibrancy and energy.
Do not stray too far from the combined influences of Greg Manchess and Jamie Hewlett; the piece should be a seamless fusion of both artists' styles.

This prompt provides a comprehensive guide for creating an artwork that intertwines the distinctive styles of two renowned artists while maintaining a fresh and contemporary feel.