Hi guys, I am new to Maya and also 3d.
I am working on a water-lily scene using about 70 spotlights to create a light dome. Problem is with the render....shadow grids on the petals....can anybody help how can I remove them? Where can be the problem?

Here is a bigger image https://simko.host.sk/waterlily.jpg
Look at the even shadow structure at the petals. Also bump map was painted by hand in Photoshop and does not have such an even structure.