The best thing about sports, most of the time is that there is always another day. As an athlete there will always be ups and downs this is ok. Its ok to be nervous its ok to make mistakes especially as a young receiver. If I could give you any advice it would be to have a short memory and dont dwell on any situation for a long time even if it is a good one. always practice hard and remember at any level you there is room for improvement. Also to get you out of this slump rememeber a great catch or play you have had in the past and use mental imagery to retake you back to that situation. Then take that to the field with you!!!