This is a psychedelic, bright, and pleasant abstract illustration. This is a psychedelic, bright, and pleasant abstract illustration.

I'm like to play with the siymmetry, the shapes, and the graduation of colours;, sometimes with the contrast, too. I like to play with the symmetry, shapes, and gradation of colors, sometimes with the contrast, too.

This sentence doesn't seem like it fits with the others, and I'm not sure what you want it to mean, so I only looked at the grammar.

This cheer andful, colorfull design can be the ideal as a gift. This cheerful, colorful design can be the ideal gift.