Well, since we don't know what you did, it's hard to gauge what you might have done wrong. However, if you just cast yesterday, I'm going to hazard a guess here and say that you might need to wait a bit before you start getting impatient. Although sometimes you see immediate results from a working, many times it takes a while to manifest -- again, depends on what you did (which you didn't mention) and how you did it. In many magical traditions, the rule of thumb is that if you don't see a result in about four weeks -- a lunar cycle -- then you can probably assume it's not going to manifest, although this does vary by tradition.
I'd recommend you write everything down that you did, and then keep some sort of magical journal in which you update each day -- this way, you can look back later and see if things manifested gradually. In the meantime, have patience, Young Grasshopper. How long does it take a spell to work?