Take a look at the:

Fifth row from the top.

It requires:

Two stars. One is in the first two cells. The other has to be in the larger shape in the middle. That shape already has one star in it in row 6 and allows you to mark the rest of that shape off.

Image:

Further Steps and Tricks: Any 2x2 set of cells can only have one star.

Look at:

Column 2 and 3, and 4 and 5 together.

The orange cells must have a star in each 2x2. The purple cells must have a star in each 2x2. This means the brown cells cannot have a star.

Take a look at the:

Fifth row from the top.

It requires:

Two stars. One is in the first two cells. The other has to be in the larger shape in the middle. That shape already has one star in it in row 6 and allows you to mark the rest of that shape off.

Image:

Further Steps and Tricks: Any 2x2 set of cells can only have one star.

Look at:

Column 2 and 3, and 4 and 5 together.

The orange cells must have a star in each 2x2. The purple cells must have a star in each 2x2. This means the brown cells cannot have a star.

Most of these techniques are covered here (KrazyDad is the source of this puzzle)
https://krazydad.com/twonottouch/
https://krazydad.com/twonottouch/intro_tutorial/
https://krazydad.com/twonottouch/med_tutorial/
https://krazydad.com/twonottouch/adv_tutorial/

Take a look at the:

Fifth row from the top.

It requires:

Two stars. One is in the first two cells. The other has to be in the larger shape in the middle. That shape already has one star in it in row 6 and allows you to mark the rest of that shape off.

Image:

Take a look at the:

Fifth row from the top.

It requires:

Two stars. One is in the first two cells. The other has to be in the larger shape in the middle. That shape already has one star in it in row 6 and allows you to mark the rest of that shape off.

Image:

Further Steps and Tricks: Any 2x2 set of cells can only have one star.

Look at:

Column 2 and 3, and 4 and 5 together.

The orange cells must have a star in each 2x2. The purple cells must have a star in each 2x2. This means the brown cells cannot have a star.