Hi Julian you were not long ago talking about smartphonephotography i'm glad you decided on providing this for the people that can't afford or are able to use a expensive camera well done. I would like to suggest a couple of themes that you can consider for us smartphone people.

*Leafs of interest with nice colors and veins.

*Small or Big plants with character and color with or without flowers.

*Maybe interesting small cactus plants.

*And flowers is good as @ridoykhan22 mentioned.

*People caught with the best laugh or smile.

Dogs and Cats is great as i have two small Chihuahua and lots of friends with cats and dogs as pets. Well lets begin i will be posting my dog picture soon.
Thanks and good luck to everyone entering @juliank contests and thanks Julian for supporting these great contests.