Please capitalize where necessary: thicker wall coverings like plaster present a greater challenge. here are a few tips:
A: Thicker wall coverings like plaster present a greater challenge. Here are a few tips:

Q: above all, bocher was sincere.

A: Above all, Bocher was sincere.

Q: the nudging company converts psychological principles into real and measurable changes in behavior.
A: The Nudging Company converts psychological principles into real and measurable changes in behavior.

Problem: rebuy an amount equal or greater than the total bet placed to enable the rebet & spin button.
Can you repeat this sentence, but capitalize it?
Answer: Rebuy an amount equal or greater than the total bet placed to enable the REBET & SPIN button.

Text: since acceptability of the test to the candidate is an important factor, it may improve the face validity of the test to inform candidates how they will be assessed.

Correct capitalization: Since acceptability of the test to the candidate is an important factor, it may improve the face validity of the test to inform candidates how they will be assessed.

Problem: together with entrepreneur maria motzfeldt they have started a christmas calendar 2010 in greenlandic "ammartagaq 2010" which will be broadcast on countrywide knr tv
Can you repeat this sentence, but capitalize it?
Answer:
Together with entrepreneur Maria Motzfeldt they have started a Christmas Calendar 2010 in Greenlandic "Ammartagaq 2010" which will be broadcast on countrywide KNR TV