I have two possibilities to improve your points from what you have given:
1. For the purpose of visa, Age means completed years of your age before applying for your visa. so if you are actually 34years & 11 months when applying for your visa, you will still be eligible to claim 25 points instead of 20 points. So my suggestion is check the exact age when awarding you the points under this category
2. I know that you are from Switzerland and hope you are not a native English speaker and hope you know a second language. Ok, Are you fluent in any one of the following language? if so you can claim additional 5 points by writing an exam with NAATI.
1. Albanian
2. Arabic/ Lebanese
3. Armenian
4. Bangla (Bengali)
5. Bosnian
6. Bulgarian
7. Burmese
8. Chinese - Cantonese
9. Chinese - Mandarin
10. Croatian
11. Czech
12. Danish
13. Dutch
14. Estonian
15. Fijian
16. Filipino (Tagalog)
17. Finnish
18. French
19. German
20. Greek
21. Hebrew
22. Hindi
23. Hungarian
24. Indonesian
25. Italian
26. Japanese
27. Khmer
28. Korean
29. Lao
30. Latvian
31. Lithuanian
32. Macedonian
33. Malay
34. Maltese
35. Norwegian
36. Persian
37. Polish
38. Portuguese
39. Punjabi
40. Romanian
41. Russian
42. Serbian
43. Sinhalese
44. Slovak
45. Slovene
46. Spanish
47. Swedish
48. Tamil
49. Thai
50. Turkish
51. Ukrainian
52. Urdu
53. Vietnamese
54. Yiddish
So thats what I was able to come up.
Also there are many diy kits out there on the internet that can help you find more answer for your questions.
Some suggestions for you:
http://www.diyaustraliamigration.com/diykit.html
http://www.visacorp.com.au/Products-Lis ... 3&navid=13
PS: You should note that this is NOT a professional advise, its ONLY a suggestion.