How should I anchor my floss at beginning?
Though some people will tell you otherwise, never use knots in needlework. It tends to cause a bulge on front of fabric when piece is mounted. To start, hold end of floss on reverse side and stitch over it with first couple stitches. To finish off a strand run needle under a few stitches on back. Avoid anchoring colored threads under white threads since color tends to show through to front. Trim tails.
The technique I use is one that I learned from my aunt. Start by separating one long strand of floss and doubling it over on itself so it forms a loop at one end. Thread two raw ends through needle. Begin by taking your needle up through fabric. Make your first stitch, and go down through fabric. Take your needle through loop. The thread is now anchored securely, and looks neater on back.
I have finished a piece of cross-stitch work and now I cannot get creases from hoop out. I do not need to wash it how can I get them out?
You can damped it and iron it, BUT floss colors might run beads might melt or crease might not come out all together. Before trying this be sure to take some strands of floss and put them on a sample of cloth and dampen them to see if color runs. When you iron, use a cool iron on back of design, and put a towel on both sides, never put an iron directly on stitches! Alternatively you could go to your dry cleaners and ask them if them could help with a light steam iron, but know if colors can run.
The best way to get them out is to avoid getting them in first place. I would suggest that you take fabric out of hoop every time you stop sewing, and move it to a slightly different place each time. Another option is to place a piece of plastic wrap between top hoop and fabric before stitching. Then all you just cut out a hole for stitching. This keeps hoop from touching fabric.