I really stress to beginners that the accurate seaming is the key to success. Get the stitch length and quality and width down and you can do anything. I call it driving lessons, you do it until it is natural to you.
I think you can do these, looks pretty straight forward in terms of straight seams and cuts and not too tiny of pieces. Concentrate on cutting well. Then on that consistent seam. And then carry on, Quilter!
But if you are feeling confused or anxious or getting stressed, then it's time to take a break. I think really the thing I've learned most from quilting is not to "work through it" but to get up and get away from it for a bit. Most of the time there is a point in every project where I just have to grit my teeth and get it done, but that's a bit different. If you have questions or problems, it's so great to have the internet and a place like this to ask the questions. I was a solo quilter for a long time, then a guild quilter, and now an internet quilter.
Many of us have bucket list or end destination quilts in mind but know we have some work ahead of us to get us to that point. Most of us have also bitten off a bit more than we could chew at some time. For some the answer is to just put it away for later. Others rise to the occasion and learn to do what they have to do to finish, and others figure they got out of it what they wanted and now they just want to get rid of the darn thing. It's all valid.