Crochet Flower Coaster Pattern

I decided to be brave and create my own patterns.
I am no expert, I am learning as I go along, I have been crocheting for more then 30 years. My grandmother taught me when I was a young child. I am  truly thankful for the gifts she has taught me. I am really excited how this pattern turned out. Please let me know if there is any questions.

Flower Coaster PatternGage/Hook size 3mm
3.52 oz 100% Mercerized Cotton
Special stitches:

Sc/Single Crochet

3DC CL/ 3Double Crochet Cluster
Example:
Yarn over; insert hook in specified chain or stitch and draw up a loop
Yarn over and draw through first 2 loops on hook, 2 loops remain on hook.
Yarn over, insert hook in same chain or stitch and draw up a loop, Yarn over and draw through first 2 loops on hook, 3 loops remain on hook
Yarn over and draw through chain or stitch, yarn over and draw through
first 2 loops on hook, 4 loops remaining on hook,
Yarn over draw through all remaining 4 loops left on hook

4DC CL/ 4Double Crochet Cluster
Example:Yarn over; insert hook in specified chain or stitch and draw up a loop
Yarn over and draw through first 2 loops on hook, 2 loops remain on hook.
Yarn over, insert hook in same chain or stitch and draw up a loop, Yarn over and draw through first 2 loops on hook, 3 loops remain on hook
Yarn over and draw through chain or stitch, yarn over and draw through
first 2 loops on hook, 4 loops remaining on hook,
Yarn over; insert hook in same chain or stitch and draw up a loop
Yarn over and draw through first 2 loops on hook, 5 loops remain on hook.
Yarn over and draw through all remaining 5 loops left on hook
Chain Stitch 

Row 1:
Ch 4; SL in 1st Ch forming a loop

Row 2:
Ch 1; 8 Sc's in center loop. SL in 1st Sc

Row 3:
Ch 3 Counts as 1st Dc of 3DC CL in 1st SC
Ch 3, 3DC CL in Next SC, Ch 3 Rep*
{8 3DC CL's & CH3 Spaces}

Row 4:
In CH3 Sp, CH3 counts as 1st DC in 3DC CL then CH3 3DC CL
in same CH3 Space, Ch 2 then 3DC CL CH3 3DC CL in next CH3 Space.
Rep* SL in the top of the first 3DC CL
{16 3DC CL's 8 CH3 Space 8 CH2 Space}

Row 5:
In CH3 Space; CH4 then 4DC CL in next CH2 Space
CH4 SL in next CH3 Space, CH4 4DC CL in next CH2 Space.
Rep* DC for last CH4 SL top of first 4DC CL
{8 4DC CL's 15 CH4s and 1 DC for CH4}

Row 6:
Ch4 Skip 4DC CL, SL in first CH of Ch4, CH5 SL in 1st CH of next CH4
CH5 Skip 4DC CL, SL in 1st CH of the next CH4 Space.
Rep* SL in 1st CH of Beg CH4 Space
{8 CH5 & CH4 Spaces}

Row 7:
SL into next CH5 Space
CH4 Counts as 1DC & CH1 Space; DC CH1 DC CH1 DC CH1 DC = 5 DC's
& 4 Ch1 Spaces, SC in CH4 Space Rep*
SL in first Starting DC
{40 DC's 32 CH1 Spaces 8SC's}

Row 8:
SL to 1st CH1 Space, CH3 SL in next CH1, CH3 SL in next
CH1 Sp, CH3 SL in next CH1 Sp, CH3 Skip SC SL in next CH1 Space.
Rep* SL in starting CH1 Space, Fasten off
{32 CH3 Spaces}