Buddha and Lotus Tattoos: Meaning and Respectful Reference Choices

A lotus beneath the Buddha belongs to a religious image with a particular context. If that is the tattoo you want, bring the reference and identify the details that matter to you. The figure, flower and surrounding objects deserve attention as a whole.
What can the lotus mean in Buddhist art?
In its record for Scene from the Life of the Buddha, The Met explains the lotus pedestal as an image of the purity of Buddhist wisdom emerging from delusion. That is a documented interpretation of a particular artwork, rather than a universal meaning for every flower tattoo.
If that association matters to your idea, tell the artist. If you are primarily drawn to the shape of the petals, say that too. Being clear about your intention helps avoid adding a spiritual explanation that you did not choose.
Which details need a specific reference?
The face, head ornament, hands and surrounding objects can change the identification of an image. Bring the source you are using rather than a folder of unrelated sacred figures. If you want more than one figure, identify each separately and explain why they belong in the same composition.
William's Buddha in color tattoo uses blue and red shading in a vivid portrait. The Buddha with lotus and clouds study is a separate drawing with a flower and flowing frame. Compare the amount of attention each gives to the face and its surroundings.
How can you approach the design respectfully?
Learn about the exact image you want, and consider how placement or alterations may be understood within the relevant community. There is no single design checklist that speaks for every Buddhist tradition. When religious fidelity is important, include guidance from a knowledgeable person in that tradition.
At your consultation with William in Tulsa, bring the source image and explain which religious details you want preserved.