The phrase "blowing skyhigh" typically means to explode or to fail spectacularly. Here are some antonyms, or opposite words, that can be used to convey the opposite meaning:
1. Successful
2. Triumphant
3. Flourishing
4. Prospering
5. Surging
6. Thriving
7. Progressing
8. Ascending
9. Rising
10. Booming
Each of these words implies a positive outcome, and suggests that something is becoming bigger and stronger, rather than being destroyed. So, if you're looking for an alternative to "blowing skyhigh," try using one of these antonyms to convey a more uplifting message.