Paper Pieced Block
 

Two questions: Can you sew a paper pieced block to a non paper pieced block with bias pieces along the edges? And When do you remove the paper at the beginning or at the end of completing the quilt. TIA

I would remove the paper from the pp block before I sew it to the non pp block. I've sewn non pp blocks to pp blocks but I remove the paper at least from the seam allowance. I use the red binding clips to hold my blocks together so I don't get any distortion from trying to pin.
I hate removing paper from a quilt--did that once, never again! I've just finished pp 2 large quilts and removed all the papers as I completed the blocks. Try different methods and you'll find what works for you. Good luck!

And now for the opposing point of view :) I would leave the paper on to keep the bias edges from stretching. I remove the paper as soon as the block is sewn into the quilt and stabilized. I will often join 2 blocks and then remove the 1/4" of paper from the seam allowance on the edge so it's easier to join to the next group of blocks.

I stay stitch around the border of the PP block before I remove the paper. No stretching when I attach to a non-PP block.

starch will also help stabilize the bias edges before joining them- I generally remove the papers as soon as I have joined the blocks- long before completing the whole quilt top; but I leave the papers on until they are attached to the next blocks-just for the stability. if it makes sense at the time to remove the paper first I stitch a small 'stay-stitch' all the way around the block inside the seam allowance- then I starch & press well. lots of paper pieced blocks are used along with parts that are not paper pieced-