It will tend to make it want to nose up easier and if you're not on the sticks to hold it back then it could lead to a stall. As a new pilot it's likely more about your lack of experience at this point but altering the thrust line for downthrust would be a big start to helping things go smoother at this stage. I'd suggest you alter it so that the prop is roughly 2 degrees downthrust compared to the flat of the wing's lower surface. That'll be more like 3 or 3.5 degrees of true downthrust but it's esier to check.