How to stitch on sun crepe material with a sewing machine?

I bought a black sun crepe material for sewing, when i started stitching with a sewing machine the stitches were far apart and were not tight, they could be removed easily, i tried stitching on cotton a material using the same settings and was able to do so easily, when i asked my friends they too had the same problem, pls help, should i try a different numbered needle or something like that?