When using the basting spray it is best to do it where there is ample fresh air. The fumes are very harmful and the over spray gets every where. I do mine out side. Also, I find it helpful if my top and backing have been starched. Medium to heavy helps keep the fabric from stretching causing puckers.
When you baste with safety pins you will need to start quilting in the center working your way out and re-pin every row. Other wise you will get puckers, ask me how I know.
When quilting without a walking foot, if you are able, lower the pressure on the presser foot if your machine allows it. This allows the fabric to slide under the foot easier, think of it like trying to roll pie crust. The more pressure on top of the rolling pin, the more doe the gets squished out.
I'm sure your getting a ton I'd advice from every which way. Just remember to have fun and do what works for you. And YouTube has a ton of videos of different techniques.
Great colors and happy quilting!