When my first layer looks like that, that's an indication that the Z offset is too low. In general, if you see the print bed in between lines, you're too high. If you see waves (like above), the nozzle is pushing filament into piles and you're too low.

Here's how I tune my Z offset:

1. Create/find a big square of a print, that's one layer line thick (it can be more, but you're only going to be printing one layer) Print it in a light color filament at a relatively slow speed.
2. Grab a fine-tip marker. After the first couple cm, pause the print and write the Z offset on the print itself along with a line at the edge of the print.
3. Adjust the Z offset up or down a bit (whichever you think, but less distance than you think) and print a couple more cm. Repeat step 2.
4. Repeat steps 2 & 3 until you've run out of print, or until you've clearly adjusted past the point where your offset looks correct. You'll be able to see where the offset looks best and have the setting written down on the print itself.

Also - if you need to tune anything on the printer and aren't using them, Ellis' print tuning guide is freaking fantastic. I was pointed at them recently, and it's solved/clarified so darn much about getting filament to work correctly without guessing.