The problem with creativity is that you can't be taught it. Following someone else's instructions rather defeats the object! All I can really offer are a few suggestions to bear in mind:
1. Each level should bring a new concept into the game. No-one wants to play the same level over and over - so the first one should be very simple, and the later ones should get steadily more difficult. I have more than once known a game to have a flat course with no obstacles as the first section!
2. Every level is, in effect, a simple challenge - get from point A to point B. Start with a basic route that does this. Then you add obstacles (and, in later levels, wrong turns).
3. You may simply hate level design. That's okay. I hate working in sales and talking on telephones. Force yourself into doing some examples for a demo and find someone who likes level design. They'll need the first ones from you to show how everything works and you'll need to playtest the levels they produce.
Remember - level design doesn't have to be perfect. Just throw something together and sand down the rough edges when you get there.