AC won't take a charge

What is your question?

I change my orifice tube which was clogged up and tried to recharge the system it would only take about 8 oz and it seemed like the system was too full or it wouldn't take it at all it was only about a half a small can that I put in it which was 12 oz so it was a little less than the whole can the AC did get cold while I had the throttle revved up but it wouldn't take any more than the little bit in the small can how do I recharge my system all the way