Can be of strangers, friends, people in a crowd, at a sports game, demo, public/family gathering or in a public place.            5 photos.

Change your camera format to “square”. You may need to adjust your composition to suit (if no in-camera means, crop to ‘square’ in post).        5 photos.  

Still life photography depicts inanimate objects or subject matters. Be creative & play with subject and materials using different lighting settings, and experiment.                        5 photos.

 Your choice of subject. Composition exercise. 5 photos.

A very good outline is given at Travel Photography Guru @  “Magic Color Composition: 7 Easy Tips to Improve …” 7 Sept 2023  – Recommended. There are others.        5 photos.

Hint: An abstract photograph may isolate a fragment of a natural scene to remove its context from the viewer [eg, photograph of peeling paint], it may be purposely staged to create a seemingly unreal appearance from real objects, or it may involve the use of colour, light, shadow, texture, shape and/or form to convey a feeling, sensation or impression.           5 photos.

If needed, look up “Light and Shadow in Photography” on the Web to gain an insight on this subject.           5 photos.