Mariusz
Your images are excellent for first attempts. It is not easy to image these galaxies and you will need a lot longer imaging time in the order of 3-4 hrs worth of data as well as setting yourself up for guiding your mount.Might i suggest APT if you are using a Canon DSLR for image capture and do it from a dark site so that you can get rid of the LP filter.
Also pick something bright such as M42 or the Eta Carina nebula to image. Keep on imaging these until you get your focus spot on using APT and a Bahtinov mask and really look at each image to be sure you are focused. Then goto your object and get 5min subs and a lot of them. Then stack and look at the resultant image.
Its a long hard road to go down but very satisfying.
Allan
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