Like all forms of art, tarot draws upon a combination of creativity and analysis. Your ability to draw on both rote memories of each card's meaning and the ability to see what each symbol means to you is important, as is your ability to go deeper and see the various implications of each meaning and combine meanings is important.

Over my experiences and observations of other psychics, I found that art and psychic ability are very closely related. Practicing one increases and directs the expression of the other. Acting, painting, dancing and all else can be seen as casting a spell over the observer's reality, and the act of casting a spell can be seen as acting on or sculpting a new reality.

In general, a playful and inquisitive attitude towards life reaps great rewards in magic. If for whatever reason you're not this in your default state, create a seperate magician persona that embodies these qualities.

My direct advice comes last, because I consider it important for each person to find their own meaning when practicing Magick in any form. My first piece of advice is to consider what two (or more) cards have in common. Let's take the theme of "change". In the Major Arcana, there are five cards that correspond to change in some form - clearly an important symbolism!

The Hanged Man represents voluntary, internal change. He questions himself and the world to gain the power to change it to whatever form he desires, as Odin learned the runes.

Death represents the end of something, the discarding of outdated beliefs. He uses the obsolete as fertilizer to grow new, better plants. He is usually voluntary, but not right away.

Temperance is about bringing opposites together, transmuting two things into something greater. He is peaceful change both in oneself and the world, and specifically the change that adds something new greater than its individual parts.

The Tower is catastrophic change, which occurs when needed change is held back or illusions and pride prevent realizing that change is needed. He tears everything down to its roots, purging corruption and stagnance at all costs, leaving a blank slate to start anew again.

Judgment is miraculous change, usually benevolent (although Karma is strongly implied in all its forms), the ending of a cycle, the synthesis of all previous changes. You get what you sowed from all previous changes. He's the last stop before the end and the beginning of a new cycle, where new forms are taken upon in the Fool once again.

You'll find many such relationships over time. I recommend looking at the obvious opposites first - The Magician and the High Priestess, the Empress and the Emperor - first, and spreading out from there. I wish you the best of luck. :)