Today I was asked for drawing tips. My gut response is to just say, practice practice practice. This is true! That's probably the single most important thing I can tell you. But if you want something that you can work on IMMEDIATELY, and see results on your very next drawing, there are three things I can think of.
1) It's really amazing how few lines or strokes you need to represent an image. Look at my kangaroos. Other than lines for restating, You have about a dozen lines and BAM - you have a kangaroo. Try practicing stroke economy. Think before you place down lines. You draw less and the viewer fills in the details. You'll have a nice, clean picture that's easy to read. And you can start doing this right now!!
2) Shape design. Simple, overall shape design. A lot of Disney characters can be distilled into a few simple shapes. The details go on top of these simple shapes. Work with an overall simple shape first, you'll be amazed at how good your drawings will become! Look at the geese. They have simple overall shapes. I've captured their goose-ness with the big picture, the details only help.
3) Relate. Often, I see drawings that are good except that things are just off. Always know where the center line is and always relate left and right. Things line up rhythmically. (See Leonardo da Vinci's Vitruvian man). How does the left knee relate to the right? Left shoulder to right shoulder? Relating makes a drawing more solid. Check out the crocodiles. (The drawing of the pair) See how I drew a centerline down the back of the croc? That's so I can quickly relate the left and right side. You'd be surprised how many artists overlook this process!
So, those are my specific tips for beginners. Practice is a general tip, good for everything, but I think these tips can make your very next drawing better!