Things I really love in icons:saturated colouring, vibrant colours, pastel colours, tiny text, quotes used from the show/movie.

Since this is my newest obsession favourite thing:
Icons of Akk & Ayan together from The Eclipse. Their hugs and kisses are just so heart-melting! Or even of the actors (First and Khaotung) together would be loved! This alone will make me the happiest human ever.

Some other fandoms/characters/ships I like:
Attack on titan-Armin and Sasha. Armin X Jean.
Free!-Makoto, Nagisa. Rin x Makoto, Rei x Nagisa.
Yuri on ice!-Viktor Nikiforov, Yuri x Viktor.
Katekyo hitman reborn-Gokudera, Yamamoto. Gokudera X Yamamoto.
Harry Potter-The trio. Ron or Harry's iconic lines of quotes.
Miura Haruma
Lee Dong Wook
Jungkook from BTS
Guardian-Shen Wei, Zhao Yunlan. Zhao Yunlan X Shen Wei. Zhao Yunlan with lollipop.
Old fashion cupcake Nozue xTogawa
We best love fighting Mr. Second-Zhou Shu Yi x Gao Shi De

I also like moving(animated) icons like the one I'm using.

For textures I like black and white textures as I can change the layer style and use them easily. Text textures are another favourite.