Every form is intended to serve some purpose. Your first step is to identify the purpose, i.e., what you will be using the form for. Decide whether it will be used for official or personal use, whether you need to embed logos in it, whether the printable form will need to filter any data from the company software etc. Once you have identified the function the printable form is expected to perform, you can easily decide which software or online program you need to create the form.
On the other hand, a detriment of using a pre-written template is that it may not handle more complex jobs or specific types of contract projects where there are a lot of detailed deliverables. Obviously, a basic form contract is unlikely to cover all the bases for things like international joint ventures, multi-level sales agency relationships, or insurance services. These are agreements where the costs of an attorney are justified.