In my bets i suggest this few point:

1. Suitable match ( don't play anything )
2. Suitable course at probability ( never don't have sure match! )
3. Team often/rarely draw
4. Home/away
5. Opponent power
6. Not always few lose mean bad form ( could be unlucky lose with strong opponent ) and few wins meas excellent form

But the most important is VALUE BET. Just you have to good calculate probability and take bet only if is value.