The phrase "a growing picture" is correct and usable in written English.
It can be used to describe an image or situation that is developing or becoming more complex over time.
Example: "As we gather more data, we are starting to see a growing picture of the challenges we face in the project."
Alternatives: "an evolving image" or "a developing scenario".
Germany's economic ministry said industrial production shrank 4% in August adding to the growing picture of a struggling economy.
While establishing a correlation between exposure to pesticides and disease does not prove that the pesticides caused disease, it does add detail to the growing picture of pesticide-caused hematologic toxicity, and suggests a need for further study of mothballs in particular.
Ares tried to figure out how this comment fit into his growing picture of Richard.
Chances are that she would have added to the growing picture of gross ignorance, confusion and incompetence in the Cincinnati office, exacerbated by hands-off management in her own shop.
We trust that the markers and associations reported here, as well as the freely available GGM network of diabetes-related metabolic perturbations, will contribute to the growing picture of metabolic changes associated with diabetes, and will improve the functional understanding of the disease with a view of developing new therapeutic approaches and diagnostic tools.
Other distinguished names in the important and growing picture-book field were Marjorie Flack, Hardie Gramatky, James Daugherty, the d'Aulaires, and Virginia Lee Burton.
Their research confirms a growing overall picture, on both sides of the Atlantic, of mounting problems for marine predators.
While the authors are commendably correct in not attributing a cause for the increase opioid availability in Australia, these findings fit worryingly into a growing and congruent picture of the Australian market.
