What do you believe your core competency is? Focus on that. If you don't know, then use as many pre-built parts as possible; that will allow you to get out and

What do you believe your core competency is? Focus on that. If you don't know, then use as many pre-built parts as possible; that will allow you to get out and interact with customers ASAP. Then, use their feedback to guide what you need to do better. Once you know what your customers aren't getting, but they want, from your service or your competitors, solve those problems.