Free flat hero header kit by @medialoot - Perfect for designers, includes an editable PSD with movable objects.
Flat Design Christmas Cards
Flat Design Christmas Cards by PureSolution on Creative Market
These leaves are done very well. I like how there are different sizes and the shading is different. It would not make sense if the shading was the same on all of them. The shadows were they are layered are done well as well.
How to create a Light Bulb in Adobe Illustrator Tutorial
Back-to-School With 40 Excellent Adobe Illustrator Tutorials | Smashing Magazine