u/Big_Delay6203

I have been realizing that I suck at creating suspects. I can create cases with ease, deciding how the murder happens; but not suspects. Suspects are always an after thought, and there is no one to blame before the reveal. If they're not apart of the initial idea, that is. I believe I can hide the culprit well enough, but there's hardly anyone else to blame. So how do I implement suspects into me cases?