HOW TO READ DIVINATION SIGNS
FROM CANDLE-BURNING
A glass encased candle burns half clean and half dirty
This indicates that there is hidden trouble with the person for whom the lights have been set or that someone is working against your wishes. Things will not go well at first, but by repeated spells you may get them to go better.
A free-standing candle lets out a lot of smoke but burns clean at the end
Again, hidden trouble or someone working against your wishes. Things will not go well at first, but with repeated work you will overcome.
There is a dirty, black, sooty burn (especially one that messes up a glass encased candle)
This means things are going to go hard -- the spell may not work, the blessing may fail, the person is in deeper stress or trouble than you thought. If the work is being done against an enemy and the enemy's candle burns sooty and dirty, then it is likely that the enemy is fighting your influences.
A glass encased vigil candle cracks or breaks, spilling wax
This is never a "good" sign. That does not mean, however, that it is always a "bad" sign. You need to consider what kind of candle it is in order to interpret the meaning. A broken Love Me candle and dripping wax could mean tears and separation and a broken Money Stay With Me candle with dripping wax could mean inability to control outflow of money and failure of the spell -- but a broken Separation candle might signify a very compete and abrupt break-up (with tears) and a broken Cast Off Evil candle might signify that the evil spell was suddenly broken (possibly with tears, bloodshed, or God-all-knows-what). In other words, the symbolism varies based on the type of candle. In any case, the action i personally would take would be to set another of the same sort of light on the same situation; that is, i would re-do the work because i would not consider a broken candle and spilled wax to be a positive outcome unless the candle was lit for a negative petition, and even then it would have negative side-effects (tears, blood, loss).
The candle goes out before completely burning
If your light was lit for simple increase or decrease without respect to the will of another being (more wealth, less illness, etc.) then this is may be considered a bad sign -- a negative reply from the world of spirit to the question implied in the work.
If the candle was set in open opposition to the will of another person (e.g. a coercive love spell, an antagonistic spell, etc.) then this sign may either be a negative reply from the world of spirit to the question implied in the work or it may be a message from the other person, implying resistance, blockage, reversal of your designs, or sending harm back onto you or your client. Such a dousing of your lights may indicate that someone very strong is working against you or against the person on whose behalf you are setting the lights.
In any case, if the light goes out, you will have to splint the wick (that is, re-wick the candle) and pray over it before relighting it, or start the entire job over from the beginning. If the light goes out or is put out a second time, this a sign that you may need to use stronger means than you first employed to reach the goal.
The candle tips over and flames up into a fire hazard
Not only will the spell probably fail but there may be increased danger ahead for you or the client. In order to accomplish anything, you will have to start the entire job over from the beginning -- but first do a thorough Uncrossing spell for everyone involved and ritually clean the premises before setting any more lights.
The candle burns up overly fast
Generally a fast burn is good, but an overly-fast burn (compared to other times you have used the same kind of candle) means that although the work will go well, it may not last long. You might have to repeat the job at a later date. If you have set lights for several people and one person's candle burns faster than the others, then that person is most affected by the work, but the influence may not last long enough to produce a permanent change.