Yes, you could, as long as you got the right ratios of DNA (so one set from each person). Basically, that’s what happens when you have a baby the ordinary way – two people mix their DNA together to make one person who gets half of their DNA from each person. What you’re talking about would be very similar, but done in a laboratory instead of the traditional way!
Exactly as Michael has said – this is what happens when you make a baby. Half of the DNA from mum and half of the DNA from dad are mixed together. Our bodies are really clever to make sure that we get exactly the right amount of DNA, but if this goes wrong, it can be the cause of genetic disease. A clone would be an exact copy of DNA from one person, and not a mixture.