The best advice I can give you is, as soon as you have a project to do, start it
asap even if you have like a month to do it. At first, I was very bad at managing my time wisely also, and I just ended up procrastinating, telling myself I'd do it later. But trust me, when your projects are due and you have like a BUNCH of them to do at the sametime, you just want to kill yourself.
But if you do what you have to do the day (or a few days) after you've received it, you shouldn't have any problem! Everything will be fine.