Make sure to look professional and that you care, don't show up filthy with torn junk clothes even though its a construction company. Show up early and turn your phone off, not on silent or vibrate. look up the company and find out as much as you can so you know what they do and have a few good questions about opportunities for training, retirement, benefits or other things that interest you. And if you can mention how safety is important to you or throw something about being safe in the conversation thats important to many companies. If you have any certificates, a CDL, CPR or first aid. Mention how you have those or relevant training. Answer any questions they have honestly, if you have never ran a certain machine or never worked on a sewer job before don't say you have if youve only done it once or its been a long time. Those small lies will be evident pretty fast when your asked to do something or they ask you a more in depth question about it.
Hope that helps a little for a last minute suggestion