There are several things to keep in mind when you are using TPU for a project. First of all, the temperature needs to be highly consistent. In fact, it should always be between 420 degrees Fahrenheit and 480 degrees Fahrenheit. It is also best to keep your print speeds much slower with TPU so that the layers have a chance to cool down a bit between levels. As long as you keep these factors in mind, you should be able to print with TPU filament without any issue. The best thing to do when trying out new material is to take your time and go as slow as possible. That will ensure that you learn the ins and outs of the materials without making too many mistakes in the process.