So I started to ask my teacher about this and to observe Eastern Christians praying with icons. What struck me was that prayer for them seemed to be pretty much what prayer was for me. They said prayers that contained the sentiments that they wished to express to God. The difference between what they did and what I did at that time was that they turned and looked at an icon as they prayed. Also, when at home, often happily and without embarrassment they sang their prayers using very simple, easily learnt chant. Before meals, for example, the family would stand up, face an icon of Christ on the wall and sing a prayer of gratitude or even just the Our Father.
As I learnt more about icons through learning to paint them, I realized that every aspect of the style of an icon is worked out to engage us in a dynamic that assists prayer – through its form and content the icon will do the work of directing our thoughts to heaven. In short I don’t need to "do" anything. The icon does the work for me.

So the advice I was given was to ditch the books about praying with icons, and first learn to pray. Then as I pray, use some visual imagery which will engage my sight and assist me in that prayer. St Augustine said that those who sing pray twice. Perhaps that those who add sacred imagery to their prayer may be said to pray thrice. This process of engaging different aspects of the person in addition to the intellect is a move towards the ideal of praying with the whole person. This is what praying from the heart means. The heart is the vector sum of our thoughts and actions. It is our human centre of gravity when both body and soul are considered. It is the single point that, when everything is taken into account, defines what I am doing. It is the heart of us, in the sense of representing the core. This is why it is a symbol of the person. It is a symbol of love also because each of us is made by God to love him and our fellow man. It symbolizes what we ought to be rather than, necessarily, what we are. The modern world has distorted the symbolism of the heart into one of desire and "heartfelt" emotion, precisely because these are the qualities that so many today associate with the essence of humanity.
The liturgy is ultimate form of prayer. By praying with the Church, the mystical body of Christ, we are participating in "Christ's own prayer addressed to the Father in the Holy Spirit. In the liturgy, all Christian prayer finds its source and goal." (CCC 1073) Therefore, the most important practice of praying with visual imagery is in the context of the liturgy. For example, when we pray to the Father then we look at Christ, for those who have seen Him have seen the Father. The three Catholic figurative traditions in art already mentioned were developed specifically to assist this process.
Just as the liturgy is the ‘source and goal’ of prayer, so liturgical art is, I would argue, the source and goal of all Catholic art. The forms that are united to the liturgy are the basis of Catholic culture. All truly Catholic art will participate in these forms and so even if a landscape in the sitting room, will point us to the liturgical. We cannot become a culture of beauty until we habitually engage in the full human experience of the liturgy. In the context of visual art, this practice will be the source of grace from which artists will be able to produce art that will be the basis of the culture of beauty; the source of grace and from which patrons will know what art to commission; and in turn by which all of us will be able to fulfill our vocation, whatever it may be, by travelling on the via pulchritudinis, the Way of Beauty, recently described by Pope Benedict XVI.
Of course, each individual (depending upon his purse) usually has a limited influence on what art we see in our churches. However, as lay people, we can pray the Liturgy of the Hours and control imagery that we use. The tradition of the prayer corner, in which paintings are placed on a small table or shelf at home as a focus of prayer, is a good one to adopt. We ‘orientate’ our prayer towards this, letting the imagery engage our sight as we do so. We can also sing, use incense and stand, bow, sit or kneel as appropriate while praying. A book I found useful in this regard, which describes traditional practices is called Earthen Vessels (The Practice of Personal Prayer According to the Patristic Tradition) by Gabriel Bunge, OSB
Does this mean that meditation of visual imagery is not appropriate? No it does not. But as with all prayer that is not liturgical, it is should be understood by its relation to the liturgy. So just as lectio divina, for example, is good in that it is ordered to the liturgy because through it our participation in the liturgy is deepened and intensified. So, perhaps, should meditation upon visual imagery should be understood in relation to the use of imagery in the liturgical context. Also, I would say that it is useful, just as with lectio, to avoid the confusion between the Western and Eastern non-Christian ideas of meditation and contemplation are. I was recommended a book recently that helped me greatly in this regard. It is called Praying Scripture for a Change – An Introduction to Lectio Divina by Dr Tim Gray.
David Clayton is Artist-in-Residence at Thomas More College of Liberal Arts and originator of their Way of Beauty program. His summer series of courses for artists and patrons of the arts can be found at www.thomasmorecollege.edu/summerprogram/atelier