How do you personally train your clairvoyance? Did you ever have trouble visualizing and if so how long until it improved?
My answer might be a little disappointing - I've rarely tried to actively train my clairvoyance (outside of scrying sessions, that is).
It helps that I've always been quite a visual thinker. Whenever I try to process new information, such as through reading a book, I will tend to do so in images. Whenever I reflect on experiences, I do so visually.
However, if you are very keen on training clairvoyance specifically, there are a few things I can recommend:
Visual immersion
Expose yourself to as many kinds of visual art as possible. Pay attention to the strokes, lines, shapes, lighting, colour, movement, and so on. Immerse yourself.
You can go on e.g. Pinterest for convenience, but I also recommend visiting art galleries and live performances if possible because there is an added sense of 3-dimensional space.
Then, make a habit of remembering what you have seen, in as much detail as possible. Watch a video in real life, then do your utmost to re-watch the whole thing in your mind. Then, re-watch it in your mind it again, but change the outcome.
You can do this anywhere, but give it your active attention and you will gain more from the exercise.
The reason for this is, when you are performing divination and wish to see, you will draw upon your ability to visualise. Therefore inevitably, you will also draw on your memory of things you have already seen, and use it to piece together the new information provided by the reading. Your mind's eye needs to be experienced and flexible for this.
If you plan ahead to perform a reading on, say, relationships, then look at artwork, symbols and images related to that. If you're wanting to do a reading on travelling, spend some time looking at images of travelling supplies as well as destinations. If you want to do a health reading, then look at images pertaining to various parts of the physical and spiritual body.
Then you need to give yourself a cooldown period (let's say, a few days, but longer is better) before the reading. Because we most readily recall what we have recently seen, it may bias your judgement. So do the training, then give your mind some time to become un-attached to what you have viewed.
Study symbols
A picture is worth a thousand words. A symbol is worth a thousand more. There is plenty of social, cultural, emotional, intellectual and historical information contained within symbols. An entire world contained within a single simple image. Which is why both our minds, and the spirits, will draw upon their informative power to communicate.
If you look into someone's eyes and see a green serpent, what does that mean? In the world of symbolism, a snake is not just a snake. A snake is wisdom, danger, cunning, cyclical transformation. Green is not just the green of plants and trees, it has been associated with healing, vitality, kindness, jealousy, poison.
Colours, animals, weather, directions, shapes, sizes, objects, elements, stars and planets - everything is more than what it is.
For your clairvoyance to be effective, you'll want to learn the language of symbols. Both your personal language (understanding what each symbol means to you) as well as having a general grasp of what certain symbols mean to other people on a societal or cultural scale.
The root of all clairs
I personally believe that claircognisance is the root of all the clairs. In divination and scrying, before one sees, hears, smells or feels anything, we have to already know the nature of the thing on a subconscious level. That information is then transcribed into a sensation, depending on the particular senses we are most habitually attuned to.
Which means if you're struggling with clairvoyance, it might mean your strengths lie elsewhere. You'll get more out of working with your strongest clair, and letting that support the improvement of your less-developed clairs.
I hope this was helpful, good luck in your training 🌿
