I've been tying for about 5 years. I just finished cutting off some flies I tied that did not look so good. If they don't look good I will not fish them.
I would also recomend Charlie Craven's book and site for fly tying instruction. Proportions are everything and Charlie is a stickler for where everthing should go on the hook and how much to use.
Save that fly and look at it next year. You will be amazed at how good you've become.
Bill