Practice Tip; Is there a spot you just can't get? Do it very slowly for at least 3 times. Then gradually speed it up (by gradually, I mean very gradually so your body and mind can cement the notes and movements into it. Be sure to take just that spot at first then after you feel like it's better go back and see if you can play right though it. If not, do it again, and again, and again.... ;-)
Playing by Ear: Do you play by ear? It's a wonderful skill to have. If you play by ear, be sure to take the extra step of learning to read music. It will open a whole new world of music for you. That way you can play just about anything and just about any style with the added benefit of filling in those places that you might not quite get by ear, or that special time someone needs you to play something for them and you don't have time to learn by ear. Those are only a few reasons but you will find that it makes you a much better musician combined with the ability to play by ear.
If you have flash cards for music, do them at least 2 times a week. This takes the note reading AWAY from the sound and reinforces your note reading.
Are you having trouble playing or singing a certain passage? Don't go back to the beginning of the song each time you practice. Take that certain part and do it over and over until it is smooth. Then go back and find a good place to start just before that place in the music. Try it again and see if it is better. If not, practice that spot some more and then recheck it. THEN go back and play the whole song. Sometimes getting into the spot is the problem. In that case practice from a good spot to get started into the problem area. Do that until it is smooth.
More tips to come soon.