If you're having problems with shrinkage, you can lightly cleanse the base coat - think of it a bit like dry brushing for some brands, you don't have to but it can be helpful for some. The colour coats do go on lovely over a cleansed base! I always forget to wipe the base anyway though! So either way, it's up to you if you want to do it, just make sure coats are really thin. I don't use bonder atm, it's an optional step for lift prone clients and people who really struggle to get good wear out of gel. The air dry bonder is what they recommend for iLac, but they have a new one due out v soon called 007, which I'm sure will be fab! Im waiting for this to come out, but haven't yet really needed it. I'm never a fan of bonder as it can make removal tricky, usually with thorough prep it isn't necessary for the majority of clients. Some people double rock (topcoat), again it's down to preference, it will help with clients who are hard on their nails. I almost always double rock because I usually do glitter or stamping. I have done a single coat though with no issues. It's very important to use their prep product, it is acetone based as opposed to alcohol so it makes a difference. Also, stir and shake your colours really well and that will make a big difference in application, pigmentation, shrinkage, etc. Xx