Electronic – How to calculate to get the correct timing for SPI

I am having an issue with sending the correct HEX registers over SPI to a slave device. I am finally able to see my issue by decoding the SPI using a scope. What I see is random HEX during my test. About every 3rd or 4th test, the correct HEX is decoded. I am convinced that this is a clocking issue but I am unsure how to look at the scope to identify what baud to set the SPI clock. This is my first scope and I am learning how to use it. Is there something I can look at on the scope to resolve my issue?

void SPI_Init(void)
{    
  SS_Slave1_High();
  SS_Slave2_HIGH();
  SS_Slave3_HIGH();

  GPIO_PinDirection(SCK_PIN,OUTPUT);
  GPIO_PinDirection(MOSI_PIN,OUTPUT);
  GPIO_PinDirection(MISO_PIN,INPUT);

  GPIO_PinDirection(SS_Slave1,OUTPUT);
  GPIO_PinDirection(SS_Slave2,OUTPUT);
  GPIO_PinDirection(SS_Slave3,OUTPUT);

  SPCR = (1<<SPE)|(1<<MSTR)|(0<<SPR1)|(0<<SPR0);
  SPSR = (0<<SPI2X);
}

///Main Routine
SS_Slave2_LOW();

SPI_Write(0xC0);  /// This is the HEX I should see on MOSI Decode

SS_Slave2_HIGH();
DELAY_ms(10);

The decoding seems to have a pattern but not sure. I get C1, C0, 80, C1, 80, C0. It's never consistent when I execute the test.

My slave is a MCP2515 CAN controller but I think that is irrelevant because this is on the MOSI. Correct me if I am wrong.

Yellow: SCK
Blue: MOSI
Purple: SS