Alveolar fricatives go post-alveolar before coronal plosives.

[ˈʒdra.ʃtvuj.ʨə]

Diphthongs ending in /j/ shift to [Vɪ]

[ˈʒdra.ʃtvuɪ.ʨə]

[ˈʒdra.ʃtvuɪʨ]
Open syllables ending with [ə] that are unstressed lose the schwa and merge with the preceding syllable, all of course if the proceeding syllable is also open.

Alveo-palatals merge with postalveolars.

[ˈʒdra.ʃtvuɪtʃ]

Addition of schwa between stressed C + [r] compounds, with stress falling on the [r] syllable.

[ʒdə'ra.ʃtvuɪtʃ]

OK. Time for a split!

A: [ʒdr̩'a.ʃtvuɪtʃ]
the schwa and r merge into r̩

B: [ʒə'ra.ʃvuɪtʃ]
if a fricative and a plosive of the same PoA come after eachother, the plosive is dropped.

Schwa is dropped.

['ʒra.ʃvuɪtʃ]

Noticed my last post? I split the word in two separate branches and you're supposed to make sound changes on both. Like dialects or different languages. I see the one you changed was B.
So now we have:
A: [ʒdr̩'a.ʃtvuɪtʃ]

B: ['ʒra.ʃvuɪtʃ]

I thought you were making two changes at once.

A: [ʒdr̩a.'ʃtvuɪtʃ]

B: ['r̝a.ʃvuɪtʃ]

Ooh! That looks like Czech! řašvujč. Nice!